{"title":"F30 Chassis","description":null,"products":[{"product_id":"tune-f30-340i","title":"BMW F30 340i — Custom BM3 Tune","description":"\u003cp\u003e\u003cstrong\u003eLogged, verified, revised. Documented in writing. Yours to keep.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA custom bootmod3 calibration for the F30 (B58) — built from datalogs on your car, not a map off a shelf. We start from what your engine is actually doing in fuel trims, timing, knock, and load, and revise against the next log until the math and the data agree.\u003c\/p\u003e\n\u003ch3\u003eHow we approach it\u003c\/h3\u003e\n\u003cp\u003eMath first, datalogs second, marketing claims a distant last. We don't publish dyno numbers we can't reproduce; we tune to what your specific car does on the fuel you actually buy.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/configure\"\u003eConfigure your tune →\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThe matched Stage Kit for this engine — components + the calibration sold as one decision — is the \u003ca href=\"\/products\/stage-2-kit-b58\"\u003eStage 2 Kit — B58\u003c\/a\u003e. 8% under buying the parts and tune à la carte.\u003c\/p\u003e","brand":"Esse Werks","offers":[{"title":"Stage 1","offer_id":43280673472573,"sku":"EW-TUNE-F30-340I-S1","price":495.0,"currency_code":"USD","in_stock":true},{"title":"Stage 2","offer_id":43280673505341,"sku":"EW-TUNE-F30-340I-S2","price":595.0,"currency_code":"USD","in_stock":true},{"title":"Stage 3","offer_id":43280673538109,"sku":"EW-TUNE-F30-340I-S3","price":895.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/tune-card-b58_7e71e802-35c7-495d-b055-93ec72ac9ac3.png?v=1781742406"},{"product_id":"tune-bmw-n13","title":"BMW N13 Tune","description":"\u003cp\u003e\u003cstrong\u003eLogged, verified, revised. Documented in writing. Yours to keep.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA custom bootmod3 calibration for the N13 (F20\/F30 114i–320i) — built from datalogs on your car, not a map off a shelf. The N13 is a small single-turbo four; the gains here are about a cleaner, more linear part-throttle response and usable mid-range, not headline figures. We start from what your engine is actually doing in fuel trims, timing, knock, and load, and revise against the next log until the math and the data agree.\u003c\/p\u003e\n\u003cp\u003eThis is an entry-displacement engine, and we treat it like one — a daily-driven calibration that respects the stock hardware's limits rather than chasing a number it was never built to hold.\u003c\/p\u003e\n\u003ch3\u003eHow we approach it\u003c\/h3\u003e\n\u003cp\u003eMath first, datalogs second, marketing claims a distant last. We don't publish dyno numbers we can't reproduce; we tune to what your specific car does on the fuel you actually buy.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/configure\"\u003eConfigure your tune →\u003c\/a\u003e\u003c\/p\u003e","brand":"Esse Werks","offers":[{"title":"Stage 1","offer_id":43280674455613,"sku":"EW-TUNE-N13-S1","price":495.0,"currency_code":"USD","in_stock":true},{"title":"Stage 2","offer_id":43280674488381,"sku":"EW-TUNE-N13-S2","price":595.0,"currency_code":"USD","in_stock":true},{"title":"Stage 3","offer_id":43280674521149,"sku":"EW-TUNE-N13-S3","price":895.0,"currency_code":"USD","in_stock":true}]},{"product_id":"er-b48-bmw-downpipe","title":"Evolution Racewerks Competition Downpipe — B48 BMW (F-Series + G-Series)","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks Competition Series 4\" downpipe for B48 BMW applications.\u003c\/strong\u003e Replaces the OEM cat-and-downpipe section that BMW deliberately specifies for emissions compliance — and that becomes the post-turbo flow limit on Stage 2+ calibrations. Fits the listed F-series and G-series B48 platforms; confirm your chassis in the fitment list below.\u003c\/p\u003e\n\n\u003ch3\u003eWhy a downpipe matters at Stage 2 and above\u003c\/h3\u003e\n\u003cp\u003eThe OEM B48 downpipe is calibrated for stock boost. At Stage 2 boost it becomes the limiting factor on turbo response — exhaust can't evacuate fast enough behind the turbine, the turbine wheel sees elevated back-pressure, and spool gets soft. Replacing the downpipe takes that restriction off the table, which is why it is standard on any serious B48 build.\u003c\/p\u003e\n\n\u003ch3\u003eCatless vs High-Flow Catted\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCatless:\u003c\/strong\u003e race-only, maximum flow. CEL on stock cal — Esse Werks Stage 2\/3 calibrations clear monitoring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Flow Catted:\u003c\/strong\u003e 200-cell metallic cat in line. CEL-clean on stock cal. Daily-driver friendly.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e100% 304-grade stainless steel construction\u003c\/li\u003e\n  \u003cli\u003eMandrel-bent piping — smooth transitions, no flow restrictions at the bends\u003c\/li\u003e\n  \u003cli\u003e100% TIG-welded by ER's in-house fabricators\u003c\/li\u003e\n  \u003cli\u003ePrecision CNC-machined flanges (billet 304 stainless)\u003c\/li\u003e\n  \u003cli\u003eMade in the USA — manufactured in-house at ER's California facility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimited Lifetime Warranty\u003c\/strong\u003e against manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEGT bung included — standard on every Esse Werks ER order\u003c\/h3\u003e\n\u003cp\u003eEvolution Racewerks offers the EGT (Exhaust Gas Temperature) sensor bung as an optional add-on on their direct catalog. \u003cstrong\u003eWe include it on every ER downpipe \/ mid pipe we ship — no upcharge.\u003c\/strong\u003e Comes pre-installed with a 1\/8\" NPT plug so you don't need to run the EGT sensor immediately. When you're ready to add EGT monitoring to your build (recommended at Stage 2 and above for any sustained-load driving), the bung is already there.\u003c\/p\u003e\n\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis product is not for sale, installation, or use on licensed vehicles in the State of California.\u003c\/strong\u003e 49-state product. Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~3-4 hours at a competent shop. Reuses OEM hardware where applicable. Includes all hardware for complete installation.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW B48 applications across the F-series and G-series 2\/3\/4\/5 Series, X1, X2, X3, X4, and Z4. Confirm your exact chassis code in the selector — the part is sourced to match your platform.\u003c\/p\u003e\n\u003cp\u003eThis part is the downpipe-side Core of every B48 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-b48\"\u003eStage 2 Kit — B48\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Catless — Brush Finish","offer_id":43280674717757,"sku":"EW-EXH-ER-B48BMW-CATLESS","price":615.0,"currency_code":"USD","in_stock":true},{"title":"Catless — SwainTech White Lightning","offer_id":43280674750525,"sku":"EW-EXH-ER-B48BMW-CATLESS-CER","price":865.0,"currency_code":"USD","in_stock":true},{"title":"High-Flow Catted — Brush Finish","offer_id":43280674783293,"sku":"EW-EXH-ER-B48BMW-CAT","price":965.0,"currency_code":"USD","in_stock":true},{"title":"High-Flow Catted — SwainTech White Lightning","offer_id":43280674816061,"sku":"EW-EXH-ER-B48BMW-CAT-CER","price":1215.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/er-b48-bmw-downpipe-01.webp?v=1781743119"},{"product_id":"er-b58-downpipe","title":"Evolution Racewerks Competition Series 4.5\" Catless Downpipe — B58","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks 4.5\" Competition Series catless downpipe for the B58 inline-six.\u003c\/strong\u003e Three finish options. The B58 makes meaningfully more exhaust mass-flow than the B48 at the same boost level — 4.5\" is the size ER engineered specifically to match the B58's 4.5\" turbine housing outlet without creating a \"step\" transition that causes back-pressure.\u003c\/p\u003e\n\n\u003ch3\u003eWhy 4.5\" specifically\u003c\/h3\u003e\n\u003cp\u003eER's note from their own product page: \"The new turbochargers on the B58 engines utilize a much larger 4.5\" outlet compared to the 4\" outlet on the older N55 engines. If we ran a 4\" downpipe flange inlet so we can use 4\" tubing, a 'step' would be formed between the turbocharger outlet and downpipe inlet. Exhaust gas would hit this step and turbulence would form, causing back-pressure close to the turbocharger.\" ER had to source 4.5\" stainless tubing specifically — not commonly available — to keep the inlet seamless.\u003c\/p\u003e\n\n\u003ch3\u003eThree finish options\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBrush Finish (standard):\u003c\/strong\u003e ER's default. Matte stainless appearance, ages cleanly under engine bay heat cycling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePolish Finish:\u003c\/strong\u003e mirror-polished stainless. Shows in the engine bay; preferred by show-build customers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwainTech White Lightning:\u003c\/strong\u003e our signature white ceramic thermal coating — details below.\u003c\/p\u003e\n\n\u003ch3\u003eCatless reality\u003c\/h3\u003e\n\u003cp\u003eAll three finish variants are catless construction (no catalytic material). Race use only. Triggers CEL on stock calibration — Esse Werks Stage 2 \/ 3 calibrations clear rear O2 monitoring. The catted variant from ER's catalog is a separate ER product (the Sports Series 4\" catted, which uses 4\" tubing rather than 4.5\") — contact us for catted B58 sourcing.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e100% 304-grade stainless steel construction\u003c\/li\u003e\n  \u003cli\u003eMandrel-bent piping — smooth transitions, no flow restrictions at the bends\u003c\/li\u003e\n  \u003cli\u003e100% TIG-welded by ER's in-house fabricators\u003c\/li\u003e\n  \u003cli\u003ePrecision CNC-machined flanges (billet 304 stainless)\u003c\/li\u003e\n  \u003cli\u003eMade in the USA — manufactured in-house at ER's California facility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimited Lifetime Warranty\u003c\/strong\u003e against manufacturing defects\u003c\/li\u003e\n  \u003cli\u003eFree shipping in the continental US on orders over $100 from Evolution Racewerks (we pass that through — no shipping markup from us)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEGT bung included — standard on every Esse Werks ER order\u003c\/h3\u003e\n\u003cp\u003eEvolution Racewerks offers the EGT (Exhaust Gas Temperature) sensor bung as an optional add-on on their direct catalog. \u003cstrong\u003eWe include it on every ER downpipe \/ mid pipe we ship — no upcharge.\u003c\/strong\u003e Comes pre-installed with a 1\/8\" NPT plug so you don't need to run the EGT sensor immediately. When you're ready to add EGT monitoring to your build (recommended at Stage 2 and above for any sustained-load driving), the bung is already there.\u003c\/p\u003e\n\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis product is not for sale, installation, or use on licensed vehicles in the State of California.\u003c\/strong\u003e 49-state product. Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~3-4 hours at a competent shop. Reuses OEM hardware where applicable. Includes all hardware for complete installation.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eAll B58 BMW applications — M240i, M340i (incl. Touring), M440i, Z4 M40i, X3 M40i, X4 M40i, X5 40i, X6 40i, X7 40i, 540i (incl. Touring), 740i, 840i, plus legacy F-chassis M235i (B58), 340i, 440i.\u003c\/p\u003e\n\u003cp\u003eThis part is the downpipe-side Core of every B58 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-b58\"\u003eStage 2 Kit — B58\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Brush Finish","offer_id":43280677699645,"sku":"EW-EXH-ER-B58-BRUSH","price":675.0,"currency_code":"USD","in_stock":true},{"title":"Polish Finish","offer_id":43280677732413,"sku":"EW-EXH-ER-B58-POLISH","price":725.0,"currency_code":"USD","in_stock":true},{"title":"SwainTech White Lightning","offer_id":43280677765181,"sku":"EW-EXH-ER-B58-CERAMIC","price":925.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/er-b58-downpipe-01.webp?v=1781743118"},{"product_id":"er-n55-downpipe","title":"Evolution Racewerks 4\" Downpipe — N55 (F-Chassis)","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks 4\" downpipe for the single-turbo N55.\u003c\/strong\u003e The N55 is the bridge engine between the older twin-turbo I6 and the modern B58. Smaller exhaust mass-flow than either, but the OEM downpipe restriction still caps Stage 2 + 3 N55 builds at peak power. ER's 4\" replacement opens that restriction completely.\u003c\/p\u003e\n\n\u003ch3\u003eN55 single-turbo math\u003c\/h3\u003e\n\u003cp\u003eThe N55 uses a single twin-scroll turbo. One downpipe to replace (not the twin setup of the S55). ER's 4\" pipe handles the N55's airflow ceiling cleanly through Stage 3 on a supporting-hardware build.\u003c\/p\u003e\n\n\u003ch3\u003eReal-world output difference\u003c\/h3\u003e\n\u003cp\u003eCommunity feedback on calibrated N55 builds consistently reports a measurable gain from the downpipe alone — the pipe removes a restriction the OEM section imposes for noise and emissions compliance, which the tune can then capitalize on.\u003c\/p\u003e\n\n\u003ch3\u003eCatless vs Catted\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCatless:\u003c\/strong\u003e race-only, maximum flow. CEL on stock cal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Flow Catted:\u003c\/strong\u003e 200-cell metallic catalyst. CEL-clean on stock cal.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e100% 304-grade stainless steel construction\u003c\/li\u003e\n \u003cli\u003eMandrel-bent piping — smooth transitions, no flow restrictions at the bends\u003c\/li\u003e\n \u003cli\u003e100% TIG-welded by ER's in-house fabricators\u003c\/li\u003e\n \u003cli\u003ePrecision CNC-machined flanges (billet 304 stainless)\u003c\/li\u003e\n \u003cli\u003eMade in the USA — manufactured in-house at ER's California facility\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLimited Lifetime Warranty\u003c\/strong\u003e against manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEGT bung included — standard on every Esse Werks ER order\u003c\/h3\u003e\n\u003cp\u003eEvolution Racewerks offers the EGT (Exhaust Gas Temperature) sensor bung as an optional add-on on their direct catalog. \u003cstrong\u003eWe include it on every ER downpipe \/ mid pipe we ship — no upcharge.\u003c\/strong\u003e Comes pre-installed with a 1\/8\" NPT plug so you don't need to run the EGT sensor immediately. When you're ready to add EGT monitoring to your build (recommended at Stage 2 and above for any sustained-load driving), the bung is already there.\u003c\/p\u003e\n\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis product is not for sale, installation, or use on licensed vehicles in the State of California.\u003c\/strong\u003e 49-state product. Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~3-4 hours at a competent shop. Reuses OEM hardware where applicable. Includes all hardware for complete installation.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eAll N55 BMW applications — F20\/F21 M135i, F22\/F23 M235i (2014-2016 N55), F30 335i (2012-2015), F31 335i Touring, F32 435i (2014-2016), F33 435i, F36 435i, F87 M2 (2016-2018 pre-Competition).\u003c\/p\u003e\n\u003cp\u003eThis part is the downpipe-side Core of every N55 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-n55\"\u003eStage 2 Kit — N55\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Catless — Brush Finish","offer_id":43280679534653,"sku":"EW-EXH-ER-N55-CATLESS","price":615.0,"currency_code":"USD","in_stock":true},{"title":"Catless — SwainTech White Lightning","offer_id":43280679567421,"sku":"EW-EXH-ER-N55-CATLESS-CER","price":865.0,"currency_code":"USD","in_stock":true},{"title":"High-Flow Catted — Brush Finish","offer_id":43280679600189,"sku":"EW-EXH-ER-N55-CAT","price":965.0,"currency_code":"USD","in_stock":true},{"title":"High-Flow Catted — SwainTech White Lightning","offer_id":43280679632957,"sku":"EW-EXH-ER-N55-CAT-CER","price":1215.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/er-n55-downpipe-01.webp?v=1781743119"},{"product_id":"spool-fx200-hpfp-n20","title":"Spool Performance FX-200 High-Pressure Fuel Pump — N20 \/ N26","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance FX-200 high-pressure fuel pump for the N20\/N26 — the direct-injection pump that clears the Stage 2\/3 fueling ceiling.\u003c\/strong\u003e The factory DI pump runs out of volume as boost and ethanol go up, and the tune starts trimming power to hold rail pressure. The FX-200 roughly doubles stock flow, so fuel stops being the limit.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA direct, plug-and-play replacement for the OEM high-pressure (direct-injection) pump — larger bore, about twice the flow of stock, E85-compatible. A matching calibration has to be loaded before first start.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eThis is the high-pressure (DI) side. On a Stage 3 build it pairs with an upgraded low-pressure in-tank pump so it's always fed — we tune the engine to the fuel system, not the other way around.\u003c\/p\u003e\n\u003ch3\u003eOptions\u003c\/h3\u003e\n\u003cp\u003eSpool offers a wireless ethanol-content analyzer and a 10-micron inline filter as add-ons — tell us if you want either specced in.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N20\/N26 (F-chassis) — 228i (F22\/F23), 320i\/328i (F30\/F31), 428i (F32\/F33\/F36), 528i (F10). Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-n20\"\u003eFueling Kit — N20\u003c\/a\u003e bundles the matched pump + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"None \/ None","offer_id":43280681140285,"sku":"SP-FX-200-N20-NENF245","price":2205.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ None","offer_id":43280681173053,"sku":"SP-FX-200-N20-NENF245-UE","price":2205.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ None","offer_id":43280681205821,"sku":"SP-FX-200-N20-NENF245-EA","price":2554.0,"currency_code":"USD","in_stock":true},{"title":"None \/ With 10-Micron Filter","offer_id":43280681238589,"sku":"SP-FX-200-N20-NENF245-F","price":2354.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ With 10-Micron Filter","offer_id":43280681271357,"sku":"SP-FX-200-N20-NENF245-UE-F","price":2354.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ With 10-Micron Filter","offer_id":43280681304125,"sku":"SP-FX-200-N20-NENF245-EA-F","price":2703.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/spool-fx200-hpfp-ew.webp?v=1781742886"},{"product_id":"spool-fx200-hpfp-n55","title":"Spool Performance FX-200 High-Pressure Fuel Pump — N55 (F-Chassis)","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance FX-200 high-pressure fuel pump for the F-chassis N55 — the direct-injection pump that clears the Stage 2\/3 fueling ceiling.\u003c\/strong\u003e The factory DI pump runs out of volume as boost and ethanol climb, and the calibration starts trimming power to hold rail pressure. The FX-200 roughly doubles stock flow, so fuel stops being the limit.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA direct, plug-and-play replacement for the OEM high-pressure (direct-injection) pump — larger bore, about twice stock flow, E85-compatible. A matching calibration is loaded before first start.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eThe high-pressure (DI) side; on a Stage 3 build it pairs with an upgraded low-pressure in-tank pump so it stays fed. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eOptions\u003c\/h3\u003e\n\u003cp\u003eSpool offers a wireless ethanol-content analyzer and a 10-micron inline filter as add-ons — tell us if you want either specced in.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N55 (F-chassis) — F20\/F21 M135i, F22\/F23 M235i, F30 335i, F32\/F33\/F36 435i, F87 M2, F25 X3 35i, F26 X4 35i, F10 535i. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-n55\"\u003eFueling Kit — N55\u003c\/a\u003e bundles the matched pump + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"None \/ None","offer_id":43280681336893,"sku":"SP-FX-200-N55-NENF-DFVA","price":2205.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ None","offer_id":43280681369661,"sku":"SP-FX-200-N55-NENF-DFVA-UE","price":2205.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ None","offer_id":43280681402429,"sku":"SP-FX-200-N55-NENF-DFVA-EA","price":2554.0,"currency_code":"USD","in_stock":true},{"title":"None \/ With 10-Micron Filter","offer_id":43280681435197,"sku":"SP-FX-200-N55-NENF-DFVA-F","price":2354.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ With 10-Micron Filter","offer_id":43280681467965,"sku":"SP-FX-200-N55-NENF-DFVA-UE-F","price":2354.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ With 10-Micron Filter","offer_id":43280681500733,"sku":"SP-FX-200-N55-NENF-DFVA-EA-F","price":2703.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/spool-fx200-hpfp-ew02.webp?v=1781742887"},{"product_id":"aluminum-charge-pipe-b48","title":"Esse Werks Aluminum Charge Pipe — B48","description":"\u003cp\u003e\u003cstrong\u003eThe OEM B48 charge pipe is plastic. It cracks where it bends over the engine bay heat shield, splits at the boot connection to the intake manifold, or pops a clamp under sustained Stage 2+ boost.\u003c\/strong\u003e It's a well-documented failure across the B48 tuning community — owners report cracks under sustained Stage 2 driving, and some report failures early in a tuned build.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this is\u003c\/h3\u003e\n\u003cp\u003eA direct one-for-one replacement for the OEM plastic charge pipe. 6061-T6 aluminum, mandrel-bent, hand-TIG-welded at the boss, powder-coated matte black for under-hood heat retention. Reuses the OEM blow-off valve (BOV) and the OEM diverter valve (DV) — no additional purchases required. Same fitting interfaces as OEM at both the turbo outlet and the intake manifold. Drops in.\u003c\/p\u003e\n\n\u003ch3\u003eWhy aluminum matters here\u003c\/h3\u003e\n\u003cp\u003eThe OEM plastic part isn't undersized — it's the right diameter for B48 mass-flow at OEM boost. The failure mode is thermal cycling fatigue: the plastic gets brittle from repeated heat-soak cycles at sustained Stage 2 boost temperatures, and the bend radius where it crosses the engine becomes a stress concentrator. Aluminum doesn't soften or harden across this thermal range — the failure mode is eliminated.\u003c\/p\u003e\n\n\u003ch3\u003eWhen to install\u003c\/h3\u003e\n\u003cp\u003eBefore you flash a Stage 2 calibration, not after. We've seen too many customers replace the OEM plastic pipe after it cracks — and the diagnosis pre-failure is rarely clean. Boost dropping intermittently? Could be the pipe leaking before it cracks. Erratic Stage 2 datalogs? Could be the pipe flexing at peak boost. Replace as a pre-emptive part of any Stage 2+ build and avoid the diagnosis cycle.\u003c\/p\u003e\n\n\u003ch3\u003ePair with\u003c\/h3\u003e\n\u003cp\u003eAluminum charge pipe is Stage 2's required hardware (alongside FMIC upgrade). For builds going to Stage 3 \/ \u003ca href=\"\/products\/phantom-i4-s2\"\u003ePhantom I4 S2\u003c\/a\u003e turbo hardware, the charge pipe is non-optional — OEM plastic won't survive Stage 3 boost levels for even one hot run.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~1 hour at a competent shop. Disconnect BOV\/DV, remove OEM clamps at turbo outlet and intake manifold, swap pipe, reconnect. Re-clamp with the included T-bolt clamps. Verify boost retention with a pressure test before driving.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAluminum charge pipe (6061-T6, powder-coated matte black)\u003c\/li\u003e\n  \u003cli\u003eStainless T-bolt clamps for both fitting interfaces\u003c\/li\u003e\n  \u003cli\u003eReuses OEM BOV gasket and OEM hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis part is the charge pipe-side Core of every B48 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-b48\"\u003eStage 2 Kit — B48\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Esse Werks","offers":[{"title":"BMW","offer_id":43280682254397,"sku":"EW-INDU-CHARGEPIPE-B48","price":305.0,"currency_code":"USD","in_stock":true},{"title":"MINI","offer_id":43280682287165,"sku":"EW-INDU-CHARGEPIPE-B49","price":305.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/EW_B48_chargepipes_BLK01.png?v=1781742742"},{"product_id":"spool-fx200-hpfp-b58-gen1","title":"Spool Performance FX-200 High-Pressure Fuel Pump — B58 Gen1 (F-Chassis)","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance FX-200 high-pressure fuel pump for the Gen1 B58 — the direct-injection pump that clears the Stage 2\/3 fueling ceiling.\u003c\/strong\u003e The factory DI pump runs out of volume as boost and ethanol climb, and the tune starts trimming power to hold rail pressure. The FX-200 roughly doubles stock flow, so fuel stops being the limit.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA direct, plug-and-play replacement for the OEM high-pressure (direct-injection) pump — about twice stock flow, E85-compatible. A matching calibration is loaded before first start.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eHigh-pressure (DI) side; pair it with an upgraded low-pressure in-tank pump on a Stage 3 build. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eOptions\u003c\/h3\u003e\n\u003cp\u003eSpool offers a wireless ethanol-content analyzer, a 10-micron inline filter, and a stainless high-pressure line as add-ons — tell us if you want them specced in.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eGen1 B58 (F-chassis) — M240i (F22\/F23), 340i (F30\/F31\/F34), 440i (F32\/F33\/F36), 540i (F10). Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-b58\"\u003eFueling Kit — B58\u003c\/a\u003e bundles the matched pump + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"None \/ None \/ None","offer_id":43280682647613,"sku":"SP-FX-200-B58-1452F","price":2205.0,"currency_code":"USD","in_stock":true},{"title":"None \/ None \/ With Stainless HP Line","offer_id":43280682680381,"sku":"SP-FX-200-B58-1452F-SS","price":2304.0,"currency_code":"USD","in_stock":true},{"title":"None \/ With 10-Micron Filter \/ None","offer_id":43280682713149,"sku":"SP-FX-200-B58-1452F-F","price":2354.0,"currency_code":"USD","in_stock":true},{"title":"None \/ With 10-Micron Filter \/ With Stainless HP Line","offer_id":43280682745917,"sku":"SP-FX-200-B58-1452F-F-SS","price":2453.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ None \/ None","offer_id":43280682778685,"sku":"SP-FX-200-B58-1452F-UE","price":2205.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ None \/ With Stainless HP Line","offer_id":43280682811453,"sku":"SP-FX-200-B58-1452F-UE-SS","price":2304.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ With 10-Micron Filter \/ None","offer_id":43280682844221,"sku":"SP-FX-200-B58-1452F-UE-F","price":2354.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ With 10-Micron Filter \/ With Stainless HP Line","offer_id":43280682876989,"sku":"SP-FX-200-B58-1452F-UE-F-SS","price":2453.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ None \/ None","offer_id":43280682909757,"sku":"SP-FX-200-B58-1452F-EA","price":2554.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ None \/ With Stainless HP Line","offer_id":43280682942525,"sku":"SP-FX-200-B58-1452F-EA-SS","price":2653.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ With 10-Micron Filter \/ None","offer_id":43280682975293,"sku":"SP-FX-200-B58-1452F-EA-F","price":2703.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ With 10-Micron Filter \/ With Stainless HP Line","offer_id":43280683008061,"sku":"SP-FX-200-B58-1452F-EA-F-SS","price":2802.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/spool-fx200-hpfp-ew03.webp?v=1781742887"},{"product_id":"spool-b58-cam-fuel-lobe-mod","title":"Spool Performance B58 Gen1 Exhaust Cam — Fuel-Lobe Machining (+40% HPFP)","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance fuel-lobe machining for the Gen1 B58 exhaust camshaft — a re-profiled HPFP drive lobe that raises direct-injection fuel volume by about 40%.\u003c\/strong\u003e The B58's high-pressure pump is driven off a lobe on the exhaust cam; Spool re-profiles that lobe with more lift on CNC live-tooling lathes, then re-hardens and polishes it, so the pump delivers more fuel per revolution.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA machining service on the exhaust camshaft, not an off-the-shelf part. Combined with Spool FX pumps and matched injectors, it pushes the direct-injection ceiling north of 900 whp on full E85 and past 1,000 whp on E50 or less. \u003cstrong\u003eOnly compatible with Spool Performance FX pumps.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eTwo ways to buy\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWe source the cam\u003c\/strong\u003e — we supply the core and return a finished, ready-to-install camshaft. \u003cstrong\u003eI provide my core\u003c\/strong\u003e — send us your exhaust cam and we machine, re-harden, polish, and return it (about two business days in the shop). Choose above.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eA fuel-capacity mod on the high-pressure side, for big-power E85\/E50 B58 builds already running Spool fueling. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eGen1 B58 (F-chassis) — M240i, 340i, 440i, 540i and related Gen1 B58 applications. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"We source the cam","offer_id":43280685957181,"sku":"SP-B58-G1CAM","price":1415.0,"currency_code":"USD","in_stock":true},{"title":"I provide my core","offer_id":43280685989949,"sku":"SP-B58-G1CAM-CORE","price":1115.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Spool_fuel_cam_b58.webp?v=1781742887"},{"product_id":"b48-aluminum-oil-filter-housing","title":"Esse Werks B48 Aluminum Oil Filter Housing","description":"\u003cp\u003e\u003cstrong\u003eThe OEM B48 oil filter housing isn't plastic. It's carbon-fiber reinforced polymer (CFRP) — and that distinction matters because it explains the failure mode.\u003c\/strong\u003e CFRP holds shape and pressure well as a one-time-use composite under normal thermal cycling. Under sustained heat-soak from a Stage 2+ build, the resin matrix degrades, the fiber bonds release, and the housing develops hairline cracks at the oil and coolant gallery interfaces. When it fails — and it does — oil and coolant exit the engine simultaneously, and a B48 running on either depleted system is a parts car in under 60 seconds.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's different about the Esse Werks aluminum version\u003c\/h3\u003e\n\u003cp\u003eThere are several aluminum oil filter housings on the market for the B48. Most are cast in volume facilities where casting voids (air bubbles in the aluminum) are an accepted defect rate. A casting void in this part is a potential leak point at the oil or coolant gallery walls — exactly the problem the OEM CFRP has, just on the aluminum side.\u003c\/p\u003e\n\n\u003cp\u003eOur housing is \u003cstrong\u003elow-void cast\u003c\/strong\u003e. Every casting is pressure-tested before machining. Void rate is verified per batch. The aluminum itself is the right material; the manufacturing discipline is what differentiates this from the generic aluminum replacements.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLow-void cast aluminum oil filter housing (B48 application)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenuine BMW \/ MINI gasket set\u003c\/strong\u003e — not aftermarket equivalents\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenuine Mann or Mahle oil filter\u003c\/strong\u003e — installed at first install\u003c\/li\u003e\n  \u003cli\u003eFactory heat exchanger (the OEM part is retained — the housing replaces the body, not the cooling element)\u003c\/li\u003e\n  \u003cli\u003eOil filter cap (your existing OEM cap works — included as backup if yours is worn)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~2 hours at a competent shop. The housing mounts to the front side of the engine under the intake manifold — accessible without removing the manifold on most chassis. \u003cstrong\u003eUse Blue Loctite on all mounting bolts during installation.\u003c\/strong\u003e Don't over-torque (~12 Nm per BMW spec). Replace gaskets at install — we include them.\u003c\/p\u003e\n\n\u003ch3\u003eWho should buy this preemptively\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAnyone past 60,000 miles on a stock B48 housing\u003c\/li\u003e\n  \u003cli\u003eAnyone running Stage 2+ calibration (elevated cylinder pressures + sustained boost = accelerated CFRP fatigue)\u003c\/li\u003e\n  \u003cli\u003eAnyone whose B48 lives in sustained ambient heat (Florida customers, Phoenix customers, Texas summer)\u003c\/li\u003e\n  \u003cli\u003eAnyone planning to keep the car past 10 years\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePair with\u003c\/h3\u003e\n\u003cp\u003eIf you're already in the engine for charge pipe or intercooler install, the oil filter housing is a 30-minute-extra service item. Doing it preemptively at the same install appointment avoids a second labor charge later.\u003c\/p\u003e","brand":"Esse Werks","offers":[{"title":"Default Title","offer_id":43280686645309,"sku":"EW-ENG-OFH-B48","price":205.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/EW_B48_ALUOFH_BLK01.png?v=1781742738"},{"product_id":"snow-performance-stage-3-methanol-kit","title":"Snow Performance Stage 3 DI Water\/Methanol Kit","description":"\u003cp\u003e\u003cstrong\u003eCharge cooling that lowers IAT under sustained boost.\u003c\/strong\u003e The Stage 3 DI kit injects a 49% methanol \/ 51% water mix (Snow's Boost Juice) into the charge tract. Effective IAT drop is 15–35°F depending on ambient and boost pressure. Detonation margin moves with it.\u003c\/p\u003e\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHD pump with steel-braided pressure line\u003c\/li\u003e\n\u003cli\u003eController with boost-referenced injection mapping (electronically dosed, not vacuum-line driven)\u003c\/li\u003e\n\u003cli\u003eReservoir, mounting hardware, harness\u003c\/li\u003e\n\u003cli\u003e1 gallon of Boost Juice to start the system\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat it does for your tune\u003c\/h3\u003e\u003cp\u003eCharge cooling buys timing margin. On a calibrated B48 or B58 running aggressive timing in the cells where the engine is most knock-limited, meth allows 1–3° more advance at the same knock probability. That's not a flat power number — it's a track-day repeatability number.\u003c\/p\u003e\u003ch3\u003eNot magic\u003c\/h3\u003e\u003cp\u003eMeth is not a substitute for proper fueling, a correctly sized intercooler, or a calibration that respects your fuel system's actual capacity. It is an additional knock margin tool. We use it on Stage 2+ builds where the customer drives the car hot.\u003c\/p\u003e","brand":"Snow Performance","offers":[{"title":"Default Title","offer_id":43280686678077,"sku":"EW-ENG-METHKIT-S3","price":1205.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/snow_stg3_DI_EW_BLK01.png?v=1781742738"},{"product_id":"dorch-n55-hpfp-upgrade","title":"Dorch Engineering N55 HPFP Upgrade","description":"\u003cp\u003e\u003cstrong\u003eDorch Engineering high-pressure fuel pump upgrades for the N55.\u003c\/strong\u003e The N55 OEM HPFP is the fuel-system bottleneck on tuned single-turbo I6 builds — Stage 2+ calibration pulls more fuel mass-flow than the factory pump can sustain, which surfaces as fuel pressure deviation codes, knock under load, and progressive engine wear if left unaddressed.\u003c\/p\u003e\n\n\u003ch3\u003eTwo options\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLift Kit\u003c\/strong\u003e — Dorch's proprietary cam installed inside the OEM HPFP cartridge. More fuel flow on the factory pump body. Same OEM packaging, same OEM hard line connections, no fitment changes. Requires a core deposit — return your OEM pump cartridge to Dorch within 30 days, get the core refund.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDS25 Stage 2\u003c\/strong\u003e — Full pump assembly with Dorch's larger-displacement cartridge. Bolt-in replacement for the OEM HPFP. No core required. The build path for Stage 3 N55 builds running E85 or methanol injection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat you need to know\u003c\/h3\u003e\n\u003cp\u003eThe N55 platform fuel system upgrade conversation usually starts with the Lift Kit because of the price and packaging simplicity. If you're targeting top-end Stage 3 N55 output or running aggressive E-blend fueling, the DS25 is the right call from the start — the Lift Kit eventually becomes the limiting factor at sustained high-flow operation.\u003c\/p\u003e\n\n\u003ch3\u003ePair with the calibration\u003c\/h3\u003e\n\u003cp\u003eThe Esse Werks N55 Stage 2 \/ Stage 3 calibrations are built around the higher fuel flow capacity these pumps deliver. Without the HPFP upgrade, our calibrations will pull fuel-pressure trim aggressively at boost to stay within OEM pump capacity — meaning you don't realize the full output the calibration is designed for. The pump upgrade is what gets you there.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~2 hours at a competent shop. The HPFP sits on top of the N55 valve cover, accessible without removing the intake manifold. Lift Kit install requires disassembly of the OEM pump cartridge; DS25 install is a bolt-in replacement.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003e2012-2018 BMW N55 applications. F-chassis 1\/2\/3\/4 Series with N55 engine. F87 M2 (2016-2018 pre-Competition only — the M2 Competition uses the S55 engine, different HPFP). Confirm engine code at intake.\u003c\/p\u003e\n\u003cp\u003eIf you're sourcing fueling alongside the calibration, the \u003ca href=\"\/products\/fueling-kit-n55\"\u003eFueling Kit — N55\u003c\/a\u003e bundles the matched pump + tune for 8% under à la carte.\u003c\/p\u003e","brand":"Dorch Engineering","offers":[{"title":"Lift Kit (Stage 1 — ~+38% Flow, OEM Housing)","offer_id":43280686874685,"sku":"EW-FUEL-DORCH-N55-LIFT","price":1275.0,"currency_code":"USD","in_stock":true},{"title":"DS25 Stage 2 (Full Pump Upgrade, ~+25% Displacement)","offer_id":43280686907453,"sku":"EW-FUEL-DORCH-N55-DS25","price":2595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/dorch_N55_DS3.webp?v=1781742887"},{"product_id":"dorch-b48-b58-hpfp-upgrade","title":"Dorch Engineering B48 \/ B58 HPFP Upgrade","description":"\u003cp\u003e\u003cstrong\u003eDorch Engineering HPFP upgrades for the B48 and B58 platforms.\u003c\/strong\u003e Same part fits both engines — Dorch's HPFP cartridge is what any B48 or B58 build needs once it pushes Stage 2 calibration or above. The factory pump is sized for OEM boost; at Stage 2+ it can't sustain fuel rail pressure, which throws fuel pressure deviation codes and forces the calibration to pull timing.\u003c\/p\u003e\n\n\u003ch3\u003eThree stages\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGen1 DS15 Stage 1\u003c\/strong\u003e — Dorch's entry-level cartridge, more flow over OEM. Bolt-in replacement. The right pump for Stage 2 calibrations on stock turbo (B48) or Stage 1-2 on B58. Fits Gen1 B48\/B58 platforms (2014-2018 production roughly).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGen1 DS25 Stage 2.5\u003c\/strong\u003e — Dorch's higher-displacement cartridge for the same Gen1 pump body. The build path for Stage 3 B48 + Phantom I4 S2 hardware, or Stage 2.5 B58 builds running aggressive 93 octane or E-blend.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGen2 DS25 Stage 2.5\u003c\/strong\u003e — Same DS25 cartridge engineered for the Gen2 B58 pump body (2019+ production with the updated HPFP architecture). Confirm your specific year and chassis at intake — Gen1 vs Gen2 fitment is non-interchangeable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eConfirm Gen1 vs Gen2 at intake\u003c\/h3\u003e\n\u003cp\u003eThe B58 platform received an updated HPFP design in late 2018 \/ early 2019 (varies by chassis and market). The Gen2 pump body is dimensionally different from the Gen1 — Dorch's cartridges are engineered specifically per generation. We confirm your pump generation at order intake based on VIN and production date before shipping.\u003c\/p\u003e\n\n\u003ch3\u003eFor the B48 specifically\u003c\/h3\u003e\n\u003cp\u003eThe B48 shares the HPFP body and cartridge design with the B58. Dorch markets these primarily for B58 applications, but they fit and function identically on B48 engines. Esse Werks confirms this fitment in our calibration database — we install these on B48 builds regularly.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~2-3 hours at a competent shop. HPFP accessible on top of the engine without intake manifold removal on most chassis. Bolt-in replacement. Re-prime fuel system after install before flashing the matched Stage 2+ calibration.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eAll B48 and B58 applications across BMW F-series, G-series, and MINI F-series. Confirm chassis + production year at intake to select correct Gen1 vs Gen2 variant.\u003c\/p\u003e","brand":"Dorch Engineering","offers":[{"title":"Gen1 DS15 Stage 1 (~+15% Flow) \/ 1-4 Series Fitment","offer_id":43280686940221,"sku":"EW-FUEL-DORCH-B58-DS15","price":1955.0,"currency_code":"USD","in_stock":true},{"title":"Gen1 DS15 Stage 1 (~+15% Flow) \/ 5-7 Series Fitment","offer_id":43280686972989,"sku":null,"price":1955.0,"currency_code":"USD","in_stock":true},{"title":"Gen1 DS15 Stage 1 (~+15% Flow) \/ X3\/X4 Fitment","offer_id":43280687005757,"sku":null,"price":1955.0,"currency_code":"USD","in_stock":true},{"title":"Gen1 DS25 Stage 2.5 (~+25% Flow, Gen1 Pumps) \/ 1-4 Series Fitment","offer_id":43280687038525,"sku":"EW-FUEL-DORCH-B58-DS25-G1","price":2485.0,"currency_code":"USD","in_stock":true},{"title":"Gen1 DS25 Stage 2.5 (~+25% Flow, Gen1 Pumps) \/ 5-7 Series Fitment","offer_id":43280687071293,"sku":null,"price":1955.0,"currency_code":"USD","in_stock":true},{"title":"Gen1 DS25 Stage 2.5 (~+25% Flow, Gen1 Pumps) \/ X3\/X4 Fitment","offer_id":43280687104061,"sku":null,"price":1955.0,"currency_code":"USD","in_stock":true},{"title":"Gen2 DS25 Stage 2.5 (~+25% Flow, Gen2 Pumps 2019+) \/ 1-4 Series Fitment","offer_id":43280687136829,"sku":"EW-FUEL-DORCH-B58-DS25-G2","price":2545.0,"currency_code":"USD","in_stock":true},{"title":"Gen2 DS25 Stage 2.5 (~+25% Flow, Gen2 Pumps 2019+) \/ 5-7 Series Fitment","offer_id":43280687169597,"sku":null,"price":1955.0,"currency_code":"USD","in_stock":true},{"title":"Gen2 DS25 Stage 2.5 (~+25% Flow, Gen2 Pumps 2019+) \/ X3\/X4 Fitment","offer_id":43280687202365,"sku":null,"price":1955.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Dorch-B58-Gen2-Full-Kit.webp?v=1781742886"},{"product_id":"xona-xrc5357s-b48","title":"Xona XRC5357S — B48","description":"\u003cp\u003eThe Xona XRC5357S is a ball-bearing turbocharger built around the XR57S UHF (Ultra High Flow) splitter-blade turbine wheel — a design Xona rates at 62 lb\/min with a published range of 300–620HP. Compressor inducer: 53mm \/ exducer: 73mm. The XR57S UHF aero reduces rotating inertia by more than 30% versus conventional wheels, delivering spool response that larger-frame turbos at this flow level cannot match. Configured here for the BMW B48 as a single-turbo installation.\u003c\/p\u003e\n\u003cp\u003eTurbine housing — including Material, Flange, and A\/R — is selected using the guided cascade above. Compressor cover (X2C or X3C) and SwainTech coating are also selected above. Every explanation block updates as you make each selection so you can see what your configuration means before you add to cart.\u003c\/p\u003e\n\u003cp\u003eSwainTech White Lightning thermal barrier coating is available on the turbine housing (hot side), compressor housing (cold side), or both — add it via the Coating option. Ordered the BYO Core option? We will contact you after purchase with instructions for sending in your housing. 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It's the step below Spool's FX-200 — the right pump for a strong Stage 2\/3 B48 on pump gas or ethanol without going to the larger pump. Spool has since discontinued the FX-170; we still source them.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eHigh-pressure (DI) side; pair it with an upgraded low-pressure in-tank pump on a Stage 3 build. A matching calibration is loaded before first start.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW \u0026amp; MINI B48\/B46 — 230i (F22\/F23), 330i (F30\/F31), 430i (F32\/F33\/F36), and B46\/B48 MINI Cooper S \/ JCW. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"Default Title","offer_id":43280695427133,"sku":"SP-FX-200-B48-NENF","price":2205.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/spool_fx_170_01.webp?v=1781743118"},{"product_id":"xona-xrc5557s-b48","title":"Xona XRC5557S — B48","description":"\u003cp\u003eThe Xona XRC5557S is a ball-bearing turbocharger built around the XR57S UHF splitter-blade turbine wheel. Compressor: 55mm inducer \/ 76mm exducer; 68 lb\/min rated flow; published range 300–680HP. The XRC5557S steps up from the XRC5357S with a larger compressor stage for increased peak flow capacity while sharing the same 57mm turbine outlet and UHF inertia-reduction design. Configured here for the BMW B48 as a single-turbo installation.\u003c\/p\u003e\n\u003cp\u003eTurbine housing — Material, Flange, and A\/R — is selected using the guided cascade above. 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· .82 ★ \/ X3C \/ Compressor Housing (cold side)","offer_id":43280698343485,"sku":null,"price":2764.4,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · V-Band · .82 ★ \/ X3C \/ Both Turbine \u0026 Compressor Housings","offer_id":43280698376253,"sku":null,"price":2914.4,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · V-Band · 1.03 \/ X3C \/ No Coating","offer_id":43280698409021,"sku":null,"price":2564.4,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · V-Band · 1.03 \/ X3C \/ Turbine Housing (hot side)","offer_id":43280698441789,"sku":null,"price":2764.4,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · V-Band · 1.03 \/ X3C \/ Compressor Housing (cold side)","offer_id":43280698474557,"sku":null,"price":2764.4,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · V-Band · 1.03 \/ X3C \/ Both Turbine \u0026 Compressor Housings","offer_id":43280698507325,"sku":null,"price":2914.4,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · T3 · .63 \/ X3C \/ No Coating","offer_id":43280698540093,"sku":null,"price":2556.0,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · T3 · .63 \/ X3C \/ Turbine Housing (hot side)","offer_id":43280698572861,"sku":null,"price":2756.0,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · T3 · .63 \/ X3C \/ Compressor Housing (cold side)","offer_id":43280698605629,"sku":null,"price":2756.0,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · T3 · .63 \/ X3C \/ Both Turbine \u0026 Compressor Housings","offer_id":43280698638397,"sku":null,"price":2906.0,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · T3 · .82 \/ X3C \/ No Coating","offer_id":43280698671165,"sku":null,"price":2556.0,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · T3 · .82 \/ X3C \/ Turbine Housing (hot side)","offer_id":43280698703933,"sku":null,"price":2756.0,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · T3 · .82 \/ X3C \/ Compressor Housing (cold side)","offer_id":43280698736701,"sku":null,"price":2756.0,"currency_code":"USD","in_stock":false},{"title":"TiAL Stainless · T3 · .82 \/ X3C \/ Both Turbine \u0026 Compressor Housings","offer_id":43280698769469,"sku":null,"price":2906.0,"currency_code":"USD","in_stock":false},{"title":"Super Core Only \/ X3C \/ No Coating","offer_id":43280698802237,"sku":null,"price":1998.0,"currency_code":"USD","in_stock":false},{"title":"Super Core Only \/ X3C \/ Turbine Housing (hot side)","offer_id":43280698835005,"sku":null,"price":2198.0,"currency_code":"USD","in_stock":false},{"title":"Super Core Only \/ X3C \/ Compressor Housing (cold side)","offer_id":43280698867773,"sku":null,"price":2198.0,"currency_code":"USD","in_stock":false},{"title":"Super Core Only \/ X3C \/ Both Turbine \u0026 Compressor Housings","offer_id":43280698900541,"sku":null,"price":2348.0,"currency_code":"USD","in_stock":false},{"title":"BYO Core — send us your housing \/ X3C \/ No Coating","offer_id":43280698933309,"sku":null,"price":2593.0,"currency_code":"USD","in_stock":false},{"title":"BYO Core — send us your housing \/ X3C \/ Turbine Housing (hot side)","offer_id":43280698966077,"sku":null,"price":2793.0,"currency_code":"USD","in_stock":false},{"title":"BYO Core — send us your housing \/ X3C \/ Compressor Housing (cold side)","offer_id":43280698998845,"sku":null,"price":2793.0,"currency_code":"USD","in_stock":false},{"title":"BYO Core — send us your housing \/ X3C \/ Both Turbine \u0026 Compressor Housings","offer_id":43280699031613,"sku":null,"price":2943.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Gemini_Generated_Image_ubethuubethuubet.png?v=1781743119"},{"product_id":"spool-stage3-lpfp-b58","title":"Spool Performance Stage 3 Low-Pressure Fuel Pump — B58","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance Stage 3 low-pressure fuel pump for the B58 — the in-tank side that keeps a Stage 3 build fed.\u003c\/strong\u003e A big high-pressure pump is only as good as what feeds it; the factory in-tank (low-pressure) pump runs out of duty on E85 and high boost, and rail pressure drops up top. Spool's Stage 3 adds a boost-activated secondary in-tank pump, roughly doubling low-pressure flow.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA twin-pump in-tank upgrade: the factory pump plus a second pump that switches on under boost (boost\/Hobbs-switch activated), so cruise stays factory-quiet and the system only ramps when you're on it. Spool rates it to support 1,000+ whp. Built around your bucket — send-your-core, bucket trade-in, and new-build options are available; ask which suits you.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eLow-pressure (in-tank) side; it pairs with an upgraded high-pressure (DI) pump so the HPFP is never starved. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eB58 — M240i (F22), 340i (F30), 440i (F32), M340i (G20), M440i (G22), Z4 M40i (G29), M240i (G42). Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-b58\"\u003eFueling Kit — B58\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"Send your core","offer_id":43280699392061,"sku":"SP-BMB58G-LPFP-DY","price":1055.0,"currency_code":"USD","in_stock":true},{"title":"Bucket trade-in","offer_id":43280699424829,"sku":"SP-BMB58G-LPFP-DY-BT","price":1254.0,"currency_code":"USD","in_stock":true},{"title":"New bucket build","offer_id":43280699457597,"sku":"SP-BMB58G-LPFP-DY-NB","price":1354.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Spool__copy-of-g20-g22-g30-g32-g11-g12-b58-stage-3-low-pressure-fuel-pump-diy-kit__1.png?v=1781742211"},{"product_id":"spool-stage3-lpfp-b48","title":"Spool Performance Stage 3 Low-Pressure Fuel Pump — B48 \/ B46","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance Stage 3 low-pressure fuel pump for the B48\/B46 — the in-tank side that keeps a Stage 3 four-cylinder build fed.\u003c\/strong\u003e A bigger high-pressure pump is only as good as what feeds it; the factory in-tank (low-pressure) pump runs out of duty on E85 and high boost, and rail pressure drops up top. Spool's Stage 3 adds a boost-activated secondary in-tank pump, roughly doubling low-pressure flow.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA twin-pump in-tank upgrade: the factory pump plus a second pump that switches on under boost (boost\/Hobbs-switch activated), so cruise stays factory-quiet and the system only ramps when you're on it. Spool rates it to support 1,000+ whp. Built around your bucket — send-your-core, bucket trade-in, and new-build options are available; ask which suits you.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eLow-pressure (in-tank) side; it pairs with an upgraded high-pressure (DI) pump so the HPFP is never starved. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW \u0026amp; MINI B48\/B46 — 230i (F22), 330i (F30), 430i (F32\/F33\/F36), and B46\/B48 MINI Cooper S \/ JCW. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"Send your core","offer_id":43280699490365,"sku":"SP-B58-LPDI-3","price":1055.0,"currency_code":"USD","in_stock":true},{"title":"Bucket trade-in","offer_id":43280699523133,"sku":"SP-B58-LPDI-3-BT","price":1254.0,"currency_code":"USD","in_stock":true},{"title":"New bucket build","offer_id":43280699555901,"sku":"SP-B58-LPDI-3-NB","price":1354.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Spool__bmw-b48-upgraded-stage-3-low-pressure-fuel-pump__1.jpg?v=1781742211"},{"product_id":"spool-stage3-lpfp-n20","title":"Spool Performance Stage 3 Low-Pressure Fuel Pump — N20 \/ N26","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance Stage 3 low-pressure fuel pump for the N20\/N26 — the in-tank side that keeps a Stage 3 build fed.\u003c\/strong\u003e A bigger high-pressure pump is only as good as what feeds it; the factory in-tank (low-pressure) pump runs out of duty on E85 and high boost, and rail pressure drops up top. Spool's Stage 3 adds a boost-activated secondary in-tank pump, roughly doubling low-pressure flow.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA twin-pump in-tank upgrade: the factory pump plus a second pump that switches on under boost — it ships with Spool's Hobbs (boost) switch for activation, so cruise stays factory-quiet and the system only ramps when you're on it. Spool rates it to support 1,200+ whp, and it's a complete drop-in replacement.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eLow-pressure (in-tank) side; it pairs with an upgraded high-pressure (DI) pump so the HPFP is never starved. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N20\/N26 (F-chassis) — 228i (F22\/F23), 320i\/328i (F30\/F31), 428i (F32\/F33\/F36), 528i (F10). Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-n20\"\u003eFueling Kit — N20\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"Spool Hobbs Switch","offer_id":43280699588669,"sku":"SP-BMFXXN20-FP","price":935.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Spool__f-chassis-n20-n26-stage-3-low-pressure-fuel-pump__1.jpg?v=1781742211"},{"product_id":"spool-stage3-lpfp-n55","title":"Spool Performance Stage 3 Low-Pressure Fuel Pump — N55 (F-Chassis)","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance Stage 3 low-pressure fuel pump for the F-chassis N55 — the in-tank side that keeps a Stage 3 build fed.\u003c\/strong\u003e A bigger high-pressure pump is only as good as what feeds it; the factory in-tank (low-pressure) pump runs out of duty on E85 and high boost, and rail pressure drops up top. Spool's Stage 3 adds a boost-activated secondary in-tank pump, roughly doubling low-pressure flow.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA twin-pump in-tank upgrade: the factory pump plus a second pump that switches on under boost — it ships with Spool's Hobbs (boost) switch for activation, so cruise stays factory-quiet and the system only ramps when you're on it. Spool rates it to support 1,200+ whp, and it's a complete drop-in replacement.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eLow-pressure (in-tank) side; it pairs with an upgraded high-pressure (DI) pump so the HPFP is never starved. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N55 (F-chassis) — F20\/F21 M135i, F22\/F23 M235i, F30 335i, F32\/F33\/F36 435i, F87 M2. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-n55\"\u003eFueling Kit — N55\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"Spool Hobbs Switch","offer_id":43280702341181,"sku":"SP-BMFXXN-FP","price":935.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Spool__fxx-n55-stage-3-low-pressure-fuel-pump__1.jpg?v=1781742211"},{"product_id":"aa-downpipe-n20-n26","title":"Active Autowerke Downpipe — N20 \/ N26","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke catted downpipe for the N20 \/ N26 — the post-turbo restriction, opened.\u003c\/strong\u003e The factory downpipe and dense cat choke spool and flow on the gating part of the exhaust. Active Autowerke's replacement clears it while keeping a high-flow catalytic converter in the pipe — the street-friendly route to a Stage 2 calibration.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003e3.5\" 304 stainless with a 4\" GESI G-Sport High Output (HO-Series Gen 2) catalytic converter — 304 stainless through the substrate, EPA-registered and 49-state \/ OBD2 compliant, engineered not to throw a check-engine light. Not legal in California.\u003c\/p\u003e\n\u003ch3\u003eEngine-matched — enter your VIN\u003c\/h3\u003e\n\u003cp\u003eThe N20 and N26 use different downpipes that do not interchange. Add your VIN at checkout and we match and ship the correct unit for your car.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eThe downpipe is the gateway to Stage 2 on the N20\/N26 — and we build the calibration around it.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N20 \/ N26 — 228i (F22\/F23), 328i (F30\/F31), 428i (F32\/F33\/F36), 2012 and up. Confirm your chassis in the selector; we VIN-match the correct N20 vs N26 unit.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Catted (GESI)","offer_id":43280702406717,"sku":"11-079","price":1835.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Gemini_Generated_Image_hrgjx6hrgjx6hrgj.png?v=1781743119"},{"product_id":"aa-signature-downpipe-n55","title":"Active Autowerke Signature Downpipe — N55","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke catted downpipe for the N55 — the gating restriction opened, without going catless.\u003c\/strong\u003e Clears the factory downpipe\/cat choke point while keeping a high-flow converter in the pipe — the street-friendly path into Stage 2.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003e3.5\" 304 stainless with a 4.5\" GESI G-Sport Ultra High Output catalytic converter — full stainless through the substrate, EPA-registered, 49-state \/ OBD2, no CEL. Not California-legal.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eDownpipe-side core of an N55 Stage 2 build; we tune around it. The \u003ca href=\"\/products\/stage-2-kit-n55\"\u003eStage 2 Kit — N55\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N55 — M235i (F22\/F23), 335i (F30\/F31), 435i (F32\/F33\/F36), and F87 M2, 2014 and up. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Catted (GESI)","offer_id":43280702439485,"sku":"11-040","price":1805.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/AA_f3x_f87-catted-downpipe_01.webp?v=1781743118"},{"product_id":"tune-f30-330i","title":"BMW F30 330i — Custom BM3 Tune","description":"\u003cp\u003e\u003cstrong\u003eLogged, verified, revised. Documented in writing. Yours to keep.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA custom bootmod3 calibration for the F30 (B48) — built from datalogs on your car, not a map off a shelf. We start from what your engine is actually doing in fuel trims, timing, knock, and load, and revise against the next log until the math and the data agree.\u003c\/p\u003e\n\u003ch3\u003eHow we approach it\u003c\/h3\u003e\n\u003cp\u003eMath first, datalogs second, marketing claims a distant last. We don’t publish dyno numbers we can’t reproduce; we tune to what your specific car does on the fuel you actually buy.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/configure\"\u003eConfigure your tune →\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThe matched Stage Kit for this engine — components + the calibration sold as one decision — is the \u003ca href=\"\/products\/stage-2-kit-b48\"\u003eStage 2 Kit — B48\u003c\/a\u003e. 8% under buying the parts and tune à la carte.\u003c\/p\u003e","brand":"Esse Werks","offers":[{"title":"Stage 1","offer_id":43280703324221,"sku":"EW-TUNE-F30-S1","price":495.0,"currency_code":"USD","in_stock":true},{"title":"Stage 2","offer_id":43280703356989,"sku":"EW-TUNE-F30-S2","price":595.0,"currency_code":"USD","in_stock":true},{"title":"Stage 3","offer_id":43280703389757,"sku":"EW-TUNE-F30-S3","price":895.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/tune-card-b48_e3f1086e-f954-4ed1-b059-ea51b309075d.png?v=1781742406"},{"product_id":"er-charge-pipe-n20-n26","title":"Evolution Racewerks Charge Pipe Kit — N20 \/ N26 (F-Series)","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks two-piece charge pipe kit for the N20 and N26 four-cylinder turbo engines.\u003c\/strong\u003e The factory charge pipes are plastic, and under boost they are a known failure point — they crack or blow off the coupler and dump boost. This kit replaces both the upper (throttle-body) and lower runs with mandrel-bent aluminum.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eMandrel-bent 6061 aluminum. The upper pipe is stepped up to 2.75\" against the factory 2.5\", with a CNC-machined throttle-body flange and a CNC MAP-sensor flange. Two 1\/8\" NPT bungs come capped and ready for methanol, nitrous, or a boost reference. Beaded ends and T-bolt clamps hold the connections at pressure, and the kit retains the factory electronic diverter valve.\u003c\/p\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eBrush, Polish, or Type III hard-anodized black — choose above. The anodized finish is the most heat- and corrosion-resistant of the three.\u003c\/p\u003e\n\u003ch3\u003eWhere it sits in the system\u003c\/h3\u003e\n\u003cp\u003eThis is the complete charge-pipe path for the N20\/N26 in one two-piece kit. On the six-cylinder cars the same job is split into separate Turbo-to-Intercooler (TIC) and Lower-Intercooler (LIC) sections — different platform, different parts.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N20\/N26 — 320i\/328i (F30\/F31), 420i\/428i (F32\/F33\/F36), 125i\/M135i (F20\/F21), and 228i (F22\/F23). Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Type III Hard Anodized Black","offer_id":43280703520829,"sku":"BM-ICP006BA","price":445.0,"currency_code":"USD","in_stock":true},{"title":"Brush Finish","offer_id":43280703553597,"sku":"BM-ICP006S","price":405.0,"currency_code":"USD","in_stock":true},{"title":"Polish Finish","offer_id":43280703586365,"sku":"BM-ICP006P","price":405.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/ER_chargepipe_N20_02.webp?v=1781742886"},{"product_id":"er-tic-charge-pipe-n20-n55","title":"Evolution Racewerks Turbo-to-Intercooler (TIC) Charge Pipe — N55 (F-Series)","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks Turbo-to-Intercooler (TIC) charge pipe for the single-turbo N55.\u003c\/strong\u003e \"TIC\" is the turbo-to-intercooler run — the hot-side pipe from the turbo outlet to the intercooler inlet. The factory piece is plastic and splits under sustained boost; this is its mandrel-bent aluminum replacement.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eMandrel-bent 6061 aluminum, sized to the intercooler inlet at 2.5\". Factory-style O-ring lock flange (CNC-machined), beaded ends, T-bolt clamps, and a silicone hump hose are included.\u003c\/p\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eBrush, Polish, or Type III hard-anodized black — choose above.\u003c\/p\u003e\n\u003ch3\u003eTIC vs the rest of the charge-pipe path\u003c\/h3\u003e\n\u003cp\u003eThe N55's charge piping runs in sections. This TIC pipe is the turbo-to-intercooler (hot) side. The Lower-Intercooler (LIC) pipe is a separate part on the cold side after the intercooler. Run them together for fully hard-piped charge routing.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N55 (F-chassis) — 335i (F30), 435i (F32\/F33), M135i (F20\/F21), M235i (F22\/F23), and M2 (F87). 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housing \/ X2C \/ Compressor Housing (cold side)","offer_id":43280707715133,"sku":null,"price":2873.4,"currency_code":"USD","in_stock":false},{"title":"BYO Core — send us your housing \/ X2C \/ Both Turbine \u0026 Compressor Housings","offer_id":43280707747901,"sku":null,"price":3023.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Xona_XRC5764S_01.webp?v=1781743119"},{"product_id":"csf-ic-n55-fchassis","title":"CSF Stepped-Core Intercooler — N55 (F2x \/ F3x \/ F87 M2)","description":"\u003cp\u003e\u003cstrong\u003eCSF stepped-core front-mount intercooler for the N55 — a direct air-to-air upgrade for the F2x\/F3x and F87 M2.\u003c\/strong\u003e Unlike the water-to-air cars, the N55 cools its charge air with a front-mount intercooler; the OEM core heat-soaks under repeat pulls and bleeds power as intake temps rise.\u003c\/p\u003e\n\u003ch3\u003eWhat CSF changes\u003c\/h3\u003e\n\u003cp\u003eCSF's stepped-core design fills the available opening more completely than a flat core — they call it the largest drop-in intercooler in the class. Bar-and-plate core, rounded cast end-tanks, developed in CSF's wind tunnel and 3D-scanned for fit. CSF measures intake temps about 38°F (21°C) lower than stock after three consecutive pulls. Fully reversible to OEM.\u003c\/p\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eWe spec these with a \u003cstrong\u003eThermal Heat Dispersion coating by default\u003c\/strong\u003e — an emissivity coating that helps the core radiate heat away, which is exactly what you want on a cooler. Prefer to skip it? Raw or Black are available for less. Choose above.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eN55 — F30\/F31\/F34 335i, F32\/F33\/F36 435i, F22\/F23 M235i, and F87 M2 (N55, 2016–2018). Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eThis is the intercooler-side core of an N55 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-n55\"\u003eStage 2 Kit — N55\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"CSF","offers":[{"title":"Thermal Heat Dispersion","offer_id":43280708468797,"sku":"CSF 8115","price":895.0,"currency_code":"USD","in_stock":true},{"title":"Raw","offer_id":43280708501565,"sku":"CSF 8115","price":695.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43280708534333,"sku":"CSF 8115B","price":695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/CSF_intercooler_F87m2_n55.webp?v=1781742886"},{"product_id":"csf-cac-b58-gen1","title":"CSF Billet Charge-Air-Cooler Manifold — B58 Gen1 (F-chassis)","description":"\u003cp\u003e\u003cstrong\u003eCSF billet charge-air-cooler manifold for the Gen-1 B58 (F-chassis).\u003c\/strong\u003e Replaces the OEM plastic manifold and its integrated water-to-air charge cooler with a CNC-billet manifold and a larger cooler core.\u003c\/p\u003e\n\u003ch3\u003eWhat CSF changes\u003c\/h3\u003e\n\u003cp\u003eBillet aluminum with roughly twice the cooling rows of the factory core, machined intake runners that seal to the OEM O-rings, and a thermal-rejection competition spacer. All fittings included; pairs with the front heat exchanger.\u003c\/p\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eDefault is the \u003cstrong\u003eThermal Heat Dispersion coating\u003c\/strong\u003e — an emissivity coating that helps the part shed heat. Also available Raw, or in Esse Werks colors — Black, White, or Orange. Choose above.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eGen-1 B58 (B58B30M0) — F22\/F23 M240i, F30 340i, F31 340i Touring, F32\/F33 440i, F34 340i GT, F36 440i Gran Coupe (2016–2019). Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eThis is the charge-cooler-side core of a B58 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-b58\"\u003eStage 2 Kit — B58\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"CSF","offers":[{"title":"Thermal Heat Dispersion","offer_id":43280710565949,"sku":"CSF 8300","price":5065.0,"currency_code":"USD","in_stock":true},{"title":"Raw","offer_id":43280710598717,"sku":"CSF 8300","price":4865.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43280710631485,"sku":"CSF 8300","price":4865.0,"currency_code":"USD","in_stock":true},{"title":"White","offer_id":43280710664253,"sku":"CSF 8300","price":5065.0,"currency_code":"USD","in_stock":true},{"title":"Orange","offer_id":43280710697021,"sku":"CSF 8300","price":5065.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/CSF_charge_intake_b58g1.webp?v=1781742886"},{"product_id":"airtec-fmic-n55","title":"AIRTEC Intercooler Upgrade — BMW N55","description":"\u003cp\u003e\u003cstrong\u003eAIRTEC front-mount intercooler for the BMW N55.\u003c\/strong\u003e The OEM cooler heat-soaks under sustained boost; AIRTEC's larger core holds charge temps run after run, where the factory unit's recovery time is the limit.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eStepped twin-core — 600mm × 210mm × 140\/40mm, 14.0 litres against the OEM 7.3 litres (a 73% capacity increase) with 90% more frontal area. Cast alloy end tanks, CNC pipe connections, Pro-Series black powder-coat. Direct fit, complete with fixtures and instructions.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N55 — M135i (F20\/F21), M235i (F22\/F23), 335i (F30\/F31\/F34), 435i (F32\/F36), and F87 M2. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eAIRTEC 3-year, unlimited mileage. Part no. ATINTBMW4.\u003c\/p\u003e\n\u003cp\u003eIntercooler-side core of an N55 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-n55\"\u003eStage 2 Kit — N55\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"AIRTEC Motorsport","offers":[{"title":"Pro-Series Black","offer_id":43280711614525,"sku":"ATINTBMW4","price":1435.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/airtec-fmic-n55.webp?v=1781742886"},{"product_id":"tune-f30-335i","title":"BMW F30 335i — Custom BM3 Tune (N55)","description":"\u003cp\u003e\u003cstrong\u003eLogged, verified, revised. Documented in writing. Yours to keep.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA custom bootmod3 calibration for the F30 (N55) — built from datalogs on your car, not a map off a shelf. We start from what your engine is actually doing in fuel trims, timing, knock, and load, and revise against the next log until the math and the data agree.\u003c\/p\u003e\n\u003ch3\u003eHow we approach it\u003c\/h3\u003e\n\u003cp\u003eMath first, datalogs second, marketing claims a distant last. We don’t publish dyno numbers we can’t reproduce; we tune to what your specific car does on the fuel you actually buy.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/configure\"\u003eConfigure your tune →\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThe matched Stage Kit for this engine — components + the calibration sold as one decision — is the \u003ca href=\"\/products\/stage-2-kit-n55\"\u003eStage 2 Kit — N55\u003c\/a\u003e. 8% under buying the parts and tune à la carte.\u003c\/p\u003e","brand":"Esse Werks","offers":[{"title":"Stage 1","offer_id":43280711778365,"sku":"EW-TUNE-F30-335I-N55-S1","price":495.0,"currency_code":"USD","in_stock":true},{"title":"Stage 2","offer_id":43280711811133,"sku":"EW-TUNE-F30-335I-N55-S2","price":595.0,"currency_code":"USD","in_stock":true},{"title":"Stage 3","offer_id":43280711843901,"sku":"EW-TUNE-F30-335I-N55-S3","price":895.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/tune-card-n55_649d7716-0c3f-46fa-af53-1f4dda117974.png?v=1781742406"},{"product_id":"airtec-chargecooler-radiator-b58","title":"AIRTEC Chargecooler Radiator — B58","description":"\u003cp\u003e\u003cstrong\u003eAIRTEC chargecooler radiator for the B58 — the front heat exchanger for the air-to-water charge-cooling loop.\u003c\/strong\u003e A larger, deeper pre-rad holds coolant temps down so charge cooling holds up under sustained boost.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eTriple-pass core, 550mm × 470mm × 90mm — 23.3 litres against the OEM 7.7 litres (a 203% increase), nearly 60mm thicker. OEM mounts and coolant connectors; includes a stone guard and full fitting kit. Black powder-coat.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW B58 (F-chassis LCI) — 120i\/125i\/M140i (F20\/F21), 220i\/230i\/M240i (F22\/F23), 320i\/330i\/340i (F30\/F31\/F34), 420i\/430i\/440i (F32\/F33\/F36), 2014–2019. Confirm your chassis.\u003c\/p\u003e\n\u003cp\u003ePart no. ATRADBMW2. Heat-exchanger-side core of a B58 Stage 2 build — the \u003ca href=\"\/products\/stage-2-kit-b58\"\u003eStage 2 Kit — B58\u003c\/a\u003e bundles parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"AIRTEC Motorsport","offers":[{"title":"Default Title","offer_id":43280713646141,"sku":"ATRADBMW2","price":1375.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/airtec_b58_chargecooler_BLK01.jpg?v=1781742738"},{"product_id":"tune-f30-328i","title":"BMW F30 328i — Custom BM3 Tune (N20)","description":"\u003cp\u003e\u003cstrong\u003eLogged, verified, revised. Documented in writing. Yours to keep.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA custom bootmod3 calibration for the F30 (N20) — built from datalogs on your car, not a map off a shelf. We start from what your engine is actually doing in fuel trims, timing, knock, and load, and revise against the next log until the math and the data agree.\u003c\/p\u003e\n\u003ch3\u003eHow we approach it\u003c\/h3\u003e\n\u003cp\u003eMath first, datalogs second, marketing claims a distant last. We don’t publish dyno numbers we can’t reproduce; we tune to what your specific car does on the fuel you actually buy.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/configure\"\u003eConfigure your tune →\u003c\/a\u003e\u003c\/p\u003e","brand":"Esse Werks","offers":[{"title":"Stage 1","offer_id":43280713777213,"sku":"EW-TUNE-F30-328I-N20-S1","price":495.0,"currency_code":"USD","in_stock":true},{"title":"Stage 2","offer_id":43280713809981,"sku":"EW-TUNE-F30-328I-N20-S2","price":595.0,"currency_code":"USD","in_stock":true},{"title":"Stage 3","offer_id":43280713842749,"sku":"EW-TUNE-F30-328I-N20-S3","price":895.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/tune-card-n20_0a4f7297-106a-4c0d-807b-cadba6acbace.png?v=1781742406"},{"product_id":"csf-hx-b58-b48-fchassis","title":"CSF Triple-Pass Heat Exchanger — B58 \/ B48 (F2x \/ F3x BMW)","description":"\u003cp\u003e\u003cstrong\u003eCSF Triple-Pass heat exchanger for F2x\/F3x B58 and B48 — the radiator side of the charge-cooling loop.\u003c\/strong\u003e On these F-chassis cars the intake charge is cooled by a coolant circuit; this front exchanger cools the coolant that feeds the manifold's charge cooler. The factory unit is a single-row, ~27mm single-pass core that saturates under sustained load.\u003c\/p\u003e\n\u003ch3\u003eWhat CSF changes\u003c\/h3\u003e\n\u003cp\u003eA 68mm 2-row core — CSF calls it the largest 2-row they build — run as a triple-pass design, so the coolant crosses the core three times before returning to the manifold (the OEM unit and most aftermarket designs are single-pass). All-aluminum with B-Tube geometry, a detachable rock guard, and CNC quick-connect fittings. Installs with no modifications.\u003c\/p\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eWe spec these with a \u003cstrong\u003eThermal Heat Dispersion coating by default\u003c\/strong\u003e — an emissivity coating that helps the core radiate heat away, which is exactly what you want on a cooler. Prefer to skip it? Raw or Black are available for less. Choose above.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW F2x\/F3x — 230i (B48), 330i \/ 330e (B48), 340i (B58), 430i (B48), 440i (B58), and M240i (B58), 2016–2021. BMW applications only. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eThis is the heat-exchanger-side core of a B58\/B48 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-b58\"\u003eStage 2 Kit — B58\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"CSF","offers":[{"title":"Thermal Heat Dispersion","offer_id":43280714989629,"sku":"CSF 8131","price":985.0,"currency_code":"USD","in_stock":true},{"title":"Raw","offer_id":43280715022397,"sku":"CSF 8131","price":785.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43280715055165,"sku":"CSF 8131B","price":785.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/CSF-f3x-f2x-b58-b48-triple-pass.jpg?v=1781742887"},{"product_id":"fuelit-stage2-lpfp-n55-n20-fchassis","title":"Fuel-It! Stage 2 LPFP — N55 \/ N20 (F-Chassis)","description":"\u003cp\u003e\u003cstrong\u003eFuel-It! Stage 2 low-pressure fuel pump for the F-chassis N55\/N20 — a drop-in in-tank upgrade that feeds a Stage 2\/3 build.\u003c\/strong\u003e The factory in-tank pump runs out of duty on E85 and higher boost, starving the high-pressure pump up top. This replaces the stock pump with an E85-rated Walbro.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA complete drop-in assembly with a Walbro 450 (about 50% more flow than stock); a Walbro 525 (~65%) is available. Single pump. Because it draws more current than stock, a tired EKP (the factory pump controller) can run warm on a hard-driven car — for sustained high-power\/E85 use, step up to the dual-pump Stage 3.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eLow-pressure (in-tank) side; it keeps an upgraded high-pressure pump fed. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eF-chassis N55\/N20 — F20\/F21, F22\/F23, F87 M2, F30\/F31, F32\/F33. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-n55\"\u003eFueling Kit — N55\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Fuel-It!","offers":[{"title":"Walbro 450","offer_id":43280715087933,"sku":"FI-LPFP-S2-F","price":815.0,"currency_code":"USD","in_stock":true},{"title":"Walbro 525","offer_id":43280715120701,"sku":"FI-LPFP-S2-F-525","price":890.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/FuelIt__fuel-it-bmw-f2x-f3x-f87-n55-m2-walbro-stage-2-lpfp-upgrade__1_abd2d81e-948a-4683-bbbf-ac7e79094bdd.jpg?v=1781742108"},{"product_id":"mishimoto-fmic-n20-n26","title":"Mishimoto Performance Intercooler — N20\/N26 (F2x\/F3x)","description":"\u003cp\u003e\u003cstrong\u003eMishimoto performance intercooler for the N20\/N26 — F2x\/F3x.\u003c\/strong\u003e A bar-and-plate front-mount that holds charge temps where the OEM cooler heat-soaks.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eBar-and-plate core in a 6\" thick angled step-core design — 96% more core volume and 130% more external fin surface area than stock. Retains the factory quick-disconnect fittings for use with OEM piping. Mishimoto's testing shows up to 10 whp gained and a 45°F drop in intercooler-outlet temp on stock tuning. Available in silver or black.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eInduction-side core of a Stage 2 build — we tune to the install.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N20\/N26 — 228i (F22\/F23), 320i\/328i (F30\/F31\/F34), 428i (F32\/F33). F33 convertible and M2 need the front core-support brace removed or modified. Confirm your chassis.\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eMishimoto Lifetime Warranty. Part no. MMINT-F30-12.\u003c\/p\u003e","brand":"Mishimoto","offers":[{"title":"Silver","offer_id":43280716103741,"sku":"MMINT-F30-12","price":835.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/mishimoto_n20_n26_intercooler.webp?v=1781742811"},{"product_id":"vrsf-fmic-b48-b58","title":"VRSF Front-Mount Intercooler — B48 \/ B46 \/ B58","description":"\u003cp\u003e\u003cstrong\u003eVRSF \"Competition HD\" front-mount intercooler for the B48 \/ B46 \/ B58 (F-chassis).\u003c\/strong\u003e A bar-and-plate core that replaces the OEM tube-and-fin intercooler, which is easily overwhelmed and heat-soaks on anything above stock boost.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eHigh-density, dual-pass bar-and-plate core with CNC-machined plug-and-play fittings — compatible with any charge pipe on the market. Black powder-coat, hand-finished and pressure-tested. Replaces OEM part 17118741830.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eIntercooler-side core of a Stage 2 build — we tune to the install. Charge piping not included; works with the OEM or any aftermarket pipe.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eF-chassis 2016–2019 — 120i\/M140i (F20\/F21), 220i\/230i\/M240i (F22\/F23), 320i\/330i\/340i (F30\/F31), 420i\/430i\/440i (F32\/F33\/F36); B46\/B48\/B58. Confirm your chassis.\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eVRSF lifetime warranty. 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This sidesteps the current-draw limit of a single big pump.\u003c\/p\u003e\n\u003ch3\u003eOptions\u003c\/h3\u003e\n\u003cp\u003eTwo choices in the configurator. \u003cstrong\u003eSecondary Pump:\u003c\/strong\u003e the Walbro 450 covers most Stage 3 E85 builds; step up to the higher-flow Walbro 525 for bigger power targets. \u003cstrong\u003eTrigger:\u003c\/strong\u003e a Hobbs switch is a boost-pressure switch that brings the secondary pump online at its rated boost — the 4 PSI switch brings it in early, low in the boost curve, while the 15 PSI switch brings it in higher up. Choose \"No Hobbs switch\" if your build switches the secondary pump another way.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eLow-pressure (in-tank) side; feeds an upgraded high-pressure pump on a Stage 3 build. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eF-chassis N55\/N20 — F20\/F21, F22\/F23, F87 M2, F30\/F31, F32\/F33. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-n55\"\u003eFueling Kit — N55\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Fuel-It!","offers":[{"title":"Walbro 450 \/ No Hobbs switch","offer_id":43280732258365,"sku":"FI-LPFP-S3-F","price":1085.0,"currency_code":"USD","in_stock":true},{"title":"Walbro 450 \/ 4 PSI Hobbs switch","offer_id":43280732291133,"sku":"FI-LPFP-S3-F-H4","price":1120.0,"currency_code":"USD","in_stock":true},{"title":"Walbro 450 \/ 15 PSI Hobbs switch","offer_id":43280732323901,"sku":"FI-LPFP-S3-F-H15","price":1120.0,"currency_code":"USD","in_stock":true},{"title":"Walbro 525 \/ No Hobbs switch","offer_id":43280732356669,"sku":"FI-LPFP-S3-F-525","price":1160.0,"currency_code":"USD","in_stock":true},{"title":"Walbro 525 \/ 4 PSI Hobbs switch","offer_id":43280732389437,"sku":"FI-LPFP-S3-F-525-H4","price":1195.0,"currency_code":"USD","in_stock":true},{"title":"Walbro 525 \/ 15 PSI Hobbs switch","offer_id":43280732422205,"sku":"FI-LPFP-S3-F-525-H15","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/FuelIt__fuel-it-bmw-f-chassis-n55-n20-stage-3-lpfp-upgrade__1_42aa864e-a98c-4c58-af87-b5a8cd549883.jpg?v=1781742108"},{"product_id":"fuelit-stage2-lpfp-f1x-f30hybrid","title":"Fuel-It! 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Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-n55\"\u003eFueling Kit — N55\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Fuel-It!","offers":[{"title":"Walbro 450","offer_id":43280732454973,"sku":"FI-LPFP-S2-F1X","price":825.0,"currency_code":"USD","in_stock":true},{"title":"Walbro 525","offer_id":43280732487741,"sku":"FI-LPFP-S2-F1X-525","price":900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/FuelIt__fuel-it-bmw-f2x-f3x-f87-n55-m2-walbro-stage-2-lpfp-upgrade__1_803d57a2-fb27-4ae9-9f54-904247445eac.jpg?v=1781742108"},{"product_id":"fuelit-stage3-lpfp-b58-fchassis","title":"Fuel-It! Stage 3 Dual LPFP — B58 \/ B48 (F-Chassis)","description":"\u003cp\u003e\u003cstrong\u003eFuel-It! Stage 3 dual low-pressure fuel pump for the F-chassis B58\/B48 — the high-power, E85 answer on the in-tank side.\u003c\/strong\u003e It keeps the factory primary pump (EKP behaves normally) and adds a boost-triggered secondary Walbro.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA dual-pump kit: the stock LPFP plus a secondary Walbro 450 (525 optional) on a secondary harness, triggered under boost by a Hobbs switch. Fuel-It's guidance: up to about 700 whp on the 450; step to the 525 beyond that.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eLow-pressure (in-tank) side; feeds an upgraded high-pressure pump. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eGen1 B58 \/ B48 (F-chassis) — F22\/F23, F30\/F31, F32\/F33. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-b58\"\u003eFueling Kit — B58\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Fuel-It!","offers":[{"title":"Walbro 450","offer_id":43280732520509,"sku":"FI-LPFP-S3-B58F","price":1105.0,"currency_code":"USD","in_stock":true},{"title":"Walbro 525","offer_id":43280732553277,"sku":"FI-LPFP-S3-B58F-525","price":1180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/FuelIt__fuel-it-bmw-f-chassis-b58-walbro-stage-3-lpfp-upgrade__1.jpg?v=1781742108"},{"product_id":"xona-xrc5557s-s58","title":"Xona XRC5557S — S58 Matched Pair (×2)","description":"\u003cp\u003eThe Xona XRC5557S is a ball-bearing turbocharger built around the XR57S UHF splitter-blade turbine wheel. Compressor: 55mm inducer \/ 76mm exducer; 68 lb\/min rated flow; published range 300–680HP. This listing is a matched pair for the S58 — price covers two identical turbos, one per bank. Both units ship with the same housing configuration selected above.\u003c\/p\u003e\n\u003cp\u003eAll prices shown are for the complete matched pair. Turbine housing — Material, Flange, and A\/R — is selected using the guided cascade above. Compressor cover (X2C or X3C) and SwainTech coating are also selected above. Coating prices shown cover both housings on both turbos.\u003c\/p\u003e\n\u003cp\u003eSwainTech White Lightning thermal barrier coating is available on the turbine housings (hot side), compressor housings (cold side), or all four housings — pricing shown is per the matched pair. Ordered BYO Core? We will contact you after purchase. Ship both cores together and mark the box with your order number. 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Port Injection Kit — N55 (F-Chassis)","description":"\u003cp\u003e\u003cstrong\u003eFuel-It! port injection kit for the F-chassis N55 — a supplemental fuel system for when direct injection runs out.\u003c\/strong\u003e It adds low-pressure port injection across all six intake runners to back up the maxed-out factory DI, opening the door to big E85\/methanol power (Fuel-It rates the system up to 1,000+ whp with the right injectors).\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eCNC-machined manifold spacers (or a full replacement manifold), a billet fuel rail, up to six flow-matched port injectors (sized to your choice, or bring your own), a fuel-line adapter, and a port-injection controller. It supplements — not replaces — the factory direct injection; the injector size you run sets the power ceiling, and the controller meters the port fuel.\u003c\/p\u003e\n\u003ch3\u003eOptions\u003c\/h3\u003e\n\u003cp\u003eTwo choices in the configurator. \u003cstrong\u003eInjector:\u003c\/strong\u003e take the kit with No injectors to reuse or supply your own, or pick 550, 750, 950, or 1050cc — step up the size as your target output climbs. \u003cstrong\u003eController:\u003c\/strong\u003e Standard, or the CANfuel Sequential — Fuel-It's CAN-bus sequential controller for finer per-cylinder metering.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eSupplemental fuel for high-E85 \/ high-power N55 builds where the DI pump is the limit. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N55 (F-chassis) — M135i, M235i, M2, 335i, 435i. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-n55\"\u003eFueling Kit — N55\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Fuel-It!","offers":[{"title":"No injectors \/ Standard","offer_id":43280734650429,"sku":"FI-PI-N55","price":515.0,"currency_code":"USD","in_stock":true},{"title":"No injectors \/ CANfuel Sequential","offer_id":43280734683197,"sku":"FI-PI-N55-SEQ","price":1014.0,"currency_code":"USD","in_stock":true},{"title":"550cc \/ Standard","offer_id":43280734715965,"sku":"FI-PI-N55-I550","price":804.0,"currency_code":"USD","in_stock":true},{"title":"550cc \/ CANfuel Sequential","offer_id":43280734748733,"sku":"FI-PI-N55-I550-SEQ","price":1303.0,"currency_code":"USD","in_stock":true},{"title":"750cc \/ Standard","offer_id":43280734781501,"sku":"FI-PI-N55-I750","price":904.0,"currency_code":"USD","in_stock":true},{"title":"750cc \/ CANfuel Sequential","offer_id":43280734814269,"sku":"FI-PI-N55-I750-SEQ","price":1403.0,"currency_code":"USD","in_stock":true},{"title":"950cc \/ Standard","offer_id":43280734847037,"sku":"FI-PI-N55-I950","price":1004.0,"currency_code":"USD","in_stock":true},{"title":"950cc \/ CANfuel Sequential","offer_id":43280734879805,"sku":"FI-PI-N55-I950-SEQ","price":1503.0,"currency_code":"USD","in_stock":true},{"title":"1050cc \/ Standard","offer_id":43280734912573,"sku":"FI-PI-N55-I1050","price":1414.0,"currency_code":"USD","in_stock":true},{"title":"1050cc \/ CANfuel Sequential","offer_id":43280734945341,"sku":"FI-PI-N55-I1050-SEQ","price":1913.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/fuelit_n55_port_injection_kit.webp?v=1781742887"},{"product_id":"xona-xrc5964s-n55","title":"Xona XRC5964S — N55","description":"\u003cp\u003eThe Xona XRC5964S is a ball-bearing turbocharger built on the XR64S UHF 64mm turbine wheel. 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