{"product_id":"spool-performance-bmw-s55-fx-150-high-pressure-fuel-pump-m2-competition-m3-m4","title":"Spool Performance FX-150 High-Pressure Fuel Pump (HPFP) Upgrade Kit for BMW S55:","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \u003ch2\u003e\u003cstrong\u003eFX-150 direct injection pump kit for BMW S55 | M2 Competition, M3, M4\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003cp\u003eUnlock dependable fuelling headroom on the S55 twin turbo straight six. The Spool Performance FX-150 delivers roughly 50 percent more high-side flow than the factory units, supports higher ethanol content, and keeps fuel rail pressure rock solid under boost. Completely plug and play with OEM lines and connectors, this ethanol-ready upgrade is ideal for hybrid turbos and big power builds seeking consistent injection pressure and reliable cold starts.\u003c\/p\u003e\n  \n  \u003cp\u003eWe run this kit on our own S55 projects and customer cars, and the results speak for themselves: smoother starts, stable pressure at wide open throttle, and the confidence to push for more torque with proper calibration. If you are searching for a BMW S55 fuel system upgrade, M2 Competition fuelling solution, F80 M3 fuel rail pump, or F82\/F83 M4 DI pump kit compatible with E85 blends, this is the proven choice.\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eKey highlights\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eApproximately 50 percent increase in direct injection pump flow over stock\u003c\/li\u003e\n    \u003cli\u003eEthanol compatible for higher blend ratios including E50 to E85 when tuned\u003c\/li\u003e\n    \u003cli\u003eDirect fit installation with factory-style connections, no cutting or splicing\u003c\/li\u003e\n    \u003cli\u003eDesigned to support larger turbochargers with stable rail pressure at load\u003c\/li\u003e\n    \u003cli\u003eImproved consistency for flex fuel setups and high boost calibrations\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eWhy your S55 benefits from this fuelling upgrade\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003eOn tuned S55 engines the OEM pump arrangement can become a restriction, causing rail pressure drop at higher mass flow and ethanol content. The FX-150 increases available high-pressure volume, giving tuners the headroom needed to run more timing, more boost, and higher ethanol blends with stable commanded pressure. Expect stronger midrange, reliable top-end fuelling, and cleaner drivability when mapped correctly.\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eIncluded hardware\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e2 x FX-150 upgraded direct injection pumps\u003c\/li\u003e\n    \u003cli\u003e1 x Ethanol Content Monitor with Bluetooth app connectivity\u003c\/li\u003e\n    \u003cli\u003e1 x Bosch-spec 10 micron high-flow fuel filter\u003c\/li\u003e\n    \u003cli\u003eUpgraded fuel lines plus required installation hardware\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eFilter and ethanol monitoring\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003e10 micron filtration:\u003c\/strong\u003e Bosch-spec high-flow element to protect injectors and the high-pressure system with minimal restriction to the low side.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eEthanol Content Monitor:\u003c\/strong\u003e View in-tank ethanol percentage and fuel temperature via the SPOOL Ethanol Content Analyzer mobile app over BLE 4.0. Supplied braided steel, nylon core lines are fully E85 compatible for long-term durability.\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eTuning and setup\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003eCalibration changes are required after installation. Spool Performance can provide guidance for your existing calibrator or connect you with tuners experienced with these pumps. Always verify rail pressure targets and lambda during commissioning, especially on ethanol blends.\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eVehicle fitment\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBMW M Series F87 LCI M2 Competition S55 (2018+)\u003c\/li\u003e\n    \u003cli\u003eBMW M Series F87 LCI M2 CS S55 (2020+)\u003c\/li\u003e\n    \u003cli\u003eBMW M Series F80 M3 Saloon S55 (2012-2015)\u003c\/li\u003e\n    \u003cli\u003eBMW M Series F80 LCI M3 Saloon S55 (2015-2018)\u003c\/li\u003e\n    \u003cli\u003eBMW M Series F82 M4 Coupe S55 (2013-2017)\u003c\/li\u003e\n    \u003cli\u003eBMW M Series F82 M4 GTS Coupe S55 (2013-2017)\u003c\/li\u003e\n    \u003cli\u003eBMW M Series F82 LCI M4 Coupe S55 (2016-2019)\u003c\/li\u003e\n    \u003cli\u003eBMW M Series F82 LCI M4 CS Coupe S55 (2016-2019)\u003c\/li\u003e\n    \u003cli\u003eBMW M Series F83 M4 Convertible S55 (2013-2017)\u003c\/li\u003e\n    \u003cli\u003eBMW M Series F83 LCI M4 Convertible S55 (2016-2019)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eProfessional fitting in Warwickshire\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003eFor expert installation and post-fit calibration support, book with MJ Modifications in Warwickshire. Request a fitting quote at \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eCompatibility check before dispatch\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003eTo ensure the correct kit is supplied, please provide your UK registration or the last 7 digits of your VIN at checkout so we can verify fitment.\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eSP-FX-S55\u003c\/strong\u003e\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eManufactured by\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003eSpool Performance\u003c\/p\u003e\n\n  \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1272\/9301\/files\/Spool_Performance_BMW_S55_FX-150_High_Pressure_Fuel_Pump_M2_Competition_M3_M4_-5_2048x2048.jpg?v=1632743699\" alt=\"FX-150 direct injection pump kit for BMW S55 M2 Competition M3 M4 - E85 compatible fuelling upgrade\"\u003e\u003c\/p\u003e\n\n  \u003cp\u003e\u003csmall\u003eSearch terms: BMW S55 fuel system upgrade, S55 direct injection pump, BMW M2 Competition fuelling kit, F80 M3 fuel rail pump upgrade, F82 M4 DI pump, F83 M4 fuel pressure upgrade, ethanol ready S55, flex fuel BMW S55, E85 S55 upgrade, hybrid turbo fueling solution, stage 2 plus fueling, big turbo S55 rail pressure, plug and play S55 pump kit.\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Spool Performance","offers":[{"title":"Default Title","offer_id":56008692433282,"sku":null,"price":4252.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/Untitled-1-1014x912.jpg?v=1764090838","url":"https:\/\/mjmodifications.co.uk\/products\/spool-performance-bmw-s55-fx-150-high-pressure-fuel-pump-m2-competition-m3-m4","provider":"MJ Modifications","version":"1.0","type":"link"}