{"product_id":"fuel-it-bmw-f-series-port-injection-n55-engines","title":"Fuel-It BMW N55 F-Series Multi-Port Injection (MPI\/PI) \/ Auxiliary Fuel Rail Kit - M2 M135i M235i 335i 435i - E85 Flex Fuel Conversion, Secondary Injectors, Manifold Spacer - Bosch 52lb (550cc) Injectors","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \n  \u003ch2\u003eBMW N55 F-Series Multi-Port Fuel Upgrade with Bosch 52 lb Injectors\u003c\/h2\u003e\n  \n  \u003cp\u003e\n    Take your N55-powered M2, M135i, M235i, 335i or 435i to the next level with a proven auxiliary injection solution that keeps pace with high boost, ethanol blends and serious tuning. This bolt-on MPI rail and spacer plate adds precise supplementary fuelling alongside the factory direct injection system, giving your build the headroom it needs for flex fuel and strong, repeatable performance on road or track.\n  \u003c\/p\u003e\n  \n  \u003cp\u003e\n    We run this setup on our own N55 cars and customer projects. Feedback is consistently excellent: smoother power delivery, stable AFRs, tidy fuel trims and easy calibration. If you are pushing the limits of the stock high-pressure system, this is the clean, reversible way to add capacity with OEM-plus fit and finish.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eKey reasons enthusiasts choose this auxiliary fuel rail\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eConfidently run high ethanol content, including full E85, on stock or upgraded turbochargers\u003c\/li\u003e\n    \u003cli\u003eAdds secondary injectors that deliver extra fuel under load to overcome factory pump limitations\u003c\/li\u003e\n    \u003cli\u003eNeat, no-cut install with a manifold spacer that sits between the intake and cylinder head\u003c\/li\u003e\n    \u003cli\u003eIncludes flow-matched Bosch 52 lb injectors for consistent cylinder-to-cylinder delivery\u003c\/li\u003e\n    \u003cli\u003eBlack anodised spacer plate and fuel rail for a discreet, OEM-style appearance\u003c\/li\u003e\n    \u003cli\u003eDual supply ports for flexible plumbing in the factory location, plus optional return port support\u003c\/li\u003e\n    \u003cli\u003eMultiple package levels available, including options with integrated ethanol content sensing and Bluetooth analyser\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eWhat this multi-port setup does\u003c\/h3\u003e\n  \u003cp\u003e\n    This system adds a secondary fuel rail and injectors upstream of the intake valves, supplementing the original direct-injection hardware. The result is increased fuelling capacity for ethanol blends, higher boost targets and bigger airflow, while preserving drivability and reliability. It is a straightforward, fully reversible upgrade designed specifically for the N55 in F-Series models.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eChoose your package\u003c\/h3\u003e\n  \n  \u003ch4\u003eBasic\u003c\/h4\u003e\n  \u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e no fuel lines are included with the Basic package.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eCustom black anodised intake manifold spacer\u003c\/li\u003e\n    \u003cli\u003eMatching black anodised auxiliary fuel rail\u003c\/li\u003e\n    \u003cli\u003eBlack anodised aluminium and stainless fasteners\u003c\/li\u003e\n    \u003cli\u003eDual feed port for stock-location routing\u003c\/li\u003e\n    \u003cli\u003eOptional return port compatibility for builds with an upgraded regulator\u003c\/li\u003e\n    \u003cli\u003eSix flow-matched Bosch 52 lb injectors\u003c\/li\u003e\n    \u003cli\u003eExtended-length studs and mounting hardware\u003c\/li\u003e\n    \u003cli\u003eBMW OEM gaskets\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch4\u003eBronze\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eEverything in Basic\u003c\/li\u003e\n    \u003cli\u003eEssential connection kit:\n      \u003cul\u003e\n        \u003cli\u003eTwo custom fittings to retain the factory feed at the high-pressure pump and engine bay supply\u003c\/li\u003e\n        \u003cli\u003e-6AN 3\/8 inch upgraded fuel hose\u003c\/li\u003e\n        \u003cli\u003eHigh-flow Y adapter\u003c\/li\u003e\n        \u003cli\u003e90-degree elbow for a tidy rail connection\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch4\u003eSilver\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eEverything in Basic\u003c\/li\u003e\n    \u003cli\u003eEssential connection kit\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFull replacement upgraded feed line\u003c\/strong\u003e that replaces the stock hard line\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch4\u003eGold\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eEverything in Silver\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated ethanol sensor\u003c\/strong\u003e for accurate E content monitoring when used with an analyser\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch4\u003ePlatinum\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eEverything in Silver\u003c\/li\u003e\n    \u003cli\u003e\u003cstrong\u003eIntegrated ethanol sensor\u003c\/strong\u003e\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBluetooth and JB4-compatible ethanol analyser\u003c\/strong\u003e with 0 to 5 volt output\n      \u003cul\u003e\n        \u003cli\u003eBluetooth requires a separately purchased iPhone or Android app\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eCompatibility and verification\u003c\/h3\u003e\n  \u003cp\u003e\n    Designed for BMW N55 F-Series M2, M135i, M235i, 335i and 435i. For a perfect match, we run a compatibility check prior to dispatch. Enter your UK registration or the last 7 digits of your VIN at checkout and our team will confirm before shipping.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eInstallation and fitting\u003c\/h3\u003e\n  \u003cp\u003e\n    Suitable for experienced home installers or professional workshops. For a hassle-free, price-competitive install, 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.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eShipping and warranty\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBuilt to order - please allow 2 business days for dispatch\u003c\/li\u003e\n    \u003cli\u003eFor off-road use only\u003c\/li\u003e\n    \u003cli\u003eManufactured by Fuel-It\u003c\/li\u003e\n    \u003cli\u003eOne-year manufacturer warranty\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003ePart number\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eF-N55-PI-BA-BA-550\u003c\/strong\u003e\u003c\/p\u003e\n  \n  \u003ch3\u003eEthanol sensor note\u003c\/h3\u003e\n  \u003cp\u003e\n    Ethanol percentage is calculated by measuring the absence of petrol content. If your fuel is contaminated, the displayed reading may appear higher than the true ethanol level.\n  \u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003ch3\u003eSearch-friendly phrases\u003c\/h3\u003e\n  \u003cp\u003e\n    BMW N55 MPI kit, N55 auxiliary injection rail, F-Series flex fuel conversion, M2 ethanol-ready fuelling, M135i corn fuel setup, M235i multi-port upgrade, 335i secondary injectors, 435i manifold spacer plate, N55 additional fuelling system, Bosch 52 lb high flow injectors, N55 ethanol sensor package, Bluetooth ethanol content analyser, -6AN fuel hose kit, N55 fuel rail upgrade, F-Series big turbo fuelling, N55 tuned engine fuelling, flex fuel E85 conversion N55, N55 fuelling headroom solution, N55 direct injection support, F-Series intake spacer with fuel rail.\n  \u003c\/p\u003e\n  \n\u003c\/div\u003e","brand":"Fuel-It","offers":[{"title":"Basic (No Fuel Lines Included) \/ No Thank You! \/ Standard 550cc Injectors","offer_id":55975623033218,"sku":null,"price":1380.05,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/FUEL-ITBMWN55F-SERIESPORTINJECTION_M2_M135I_M235I_335I_435I__01_1946x_93109980-8ed9-4cf1-82da-7526e5637556_1024x1024_2x-transformed.webp?v=1763322742","url":"https:\/\/mjmodifications.co.uk\/products\/fuel-it-bmw-f-series-port-injection-n55-engines","provider":"MJ Modifications","version":"1.0","type":"link"}