{"product_id":"tune-f25-x3-xdrive35i","title":"BMW X3 xDrive35i — 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 F25 X3 xDrive35i (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. Delivery is over bootmod3 — a BM3 license and an ENET cable are required for flashing.\u003c\/p\u003e\n\u003ch3\u003eStaging\u003c\/h3\u003e\n\u003cp\u003eStage 1 runs on the stock hardware. Stage 2 expects aluminum charge pipes and a front-mount intercooler. Higher stages depend on supporting hardware and fueling; we scope those against your build rather than promise a fixed result. On the xDrive drivetrain, traction is less the limit than it is on a rear-drive car.\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":43280682319933,"sku":null,"price":495.0,"currency_code":"USD","in_stock":true},{"title":"Stage 2","offer_id":43280682352701,"sku":null,"price":595.0,"currency_code":"USD","in_stock":true},{"title":"Stage 3","offer_id":43280682385469,"sku":null,"price":895.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/essewerks.com\/products\/tune-f25-x3-xdrive35i","provider":"Esse Werks","version":"1.0","type":"link"}