{"product_id":"fuelit-cpi-s63tu-n63tu","title":"Fuel-It! Charge Pipe Injection (CPI) Kit — S63TU \/ N63TU (M5 \/ M6 \/ 550i \/ 650i)","description":"\u003cp\u003e\u003cstrong\u003eFuel-It! charge pipe injection kit for the S63TU and N63TU — the F-chassis M5\/M6 and 550i\/650i.\u003c\/strong\u003e Instead of port injectors in the runners, it injects supplemental fuel into the charge pipe after the intercooler — a simpler way to keep the V8's high-pressure pumps from falling behind on ethanol blends.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eCharge-pipe injection running off the low-pressure supply to supplement the fuel system on E30–E50 mixes, so the high-pressure pumps can keep up. Options include a fail-safe box or a standalone controller; it pairs with a flex-fuel kit for ethanol monitoring and wants an intercooler with a post-intercooler bung.\u003c\/p\u003e\n\u003ch3\u003eOptions\u003c\/h3\u003e\n\u003cp\u003ePick your Controller in the configurator. \u003cstrong\u003eWith fail-safe box\u003c\/strong\u003e is the entry control option — it manages the supplemental injection and keeps it within limits. \u003cstrong\u003eWith standalone controller\u003c\/strong\u003e steps up to a full standalone controller, the higher-tier choice for builds wanting dedicated control over the charge-pipe fueling.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eSupplemental fueling for ethanol-blend S63TU\/N63TU builds whose high-pressure pumps are the limit. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS63TU \/ N63TU (F-chassis) — F10 M5 \u0026amp; 550i, F06\/F12\/F13 M6 \u0026amp; 650i. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-s63\"\u003eFueling Kit — S63\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Fuel-It!","offers":[{"title":"With fail-safe box","offer_id":43280679108669,"sku":"FI-CPI-S63TU","price":755.0,"currency_code":"USD","in_stock":true},{"title":"With standalone controller","offer_id":43280679141437,"sku":"FI-CPI-S63TU-SAC","price":1005.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/fuelit-cpi-s63tu-n63tu.webp?v=1781742886","url":"https:\/\/essewerks.com\/products\/fuelit-cpi-s63tu-n63tu","provider":"Esse Werks","version":"1.0","type":"link"}