{"product_id":"fuel-it-bmw-e-series-port-injection-n54-n55-engines","title":"Fuel-It BMW N54 Port Fuel Injection (PI) Kit for E-Series 135i 335i 535i – Auxiliary Injectors, Fuel Rail \u0026 Manifold Spacer – E85 Flex-Fuel\/Conversion Ready, Flow-Matched Bosch Injectors – JB4 Integration, Optional Ethanol Content Sensor","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \u003ch2\u003eFuel-It Auxiliary Port Fuel System for BMW N54 E-Series\u003c\/h2\u003e\n\n  \u003cp\u003eBuild reliable fuelling headroom on your twin-turbo N54 with this direct-port auxiliary fuel upgrade from Fuel-It. Perfect for higher boost road and track builds running pump petrol, blends, or full ethanol, this add-on rail and spacer plate introduces a second set of injectors to support power where the factory high-pressure pump starts to struggle. Clean, reversible installation. OEM-like fit. Proven on real cars.\u003c\/p\u003e\n\n  \u003cp\u003eAt MJ Modifications we run Fuel-It hardware on our own N54 projects and our customers consistently report smoother high-load delivery, safer knock resistance on alcohol fuel, and repeatable performance. If you are searching for a BMW 135i 335i 535i flex-fuel upgrade, N54 auxiliary injectors, a manifold spacer rail kit, or an E-Series ethanol-ready fuelling solution, this is the setup you want.\u003c\/p\u003e\n\n  \u003ch3\u003eWhy add auxiliary port fuel to your N54\u003c\/h3\u003e\n  \u003cp\u003eThis system places six additional injectors between the cylinder head and intake manifold using a precision anodised spacer and matching fuel rail. It supplements the stock DI system, giving tuners the extra capacity required for high ethanol content, bigger boost targets, and aggressive calibrations. Control the extra injectors with your chosen tuning solution. No cutting or permanent mods needed on E-Series platforms.\u003c\/p\u003e\n\n  \u003ch3\u003eHighlights and performance advantages\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eConfident fuelling for high ethanol content including up to 100 percent E85, ideal for flex-fuel tunes\u003c\/li\u003e\n    \u003cli\u003eSupports stock turbos and uprated turbocharger setups on BMW E-Series N54\u003c\/li\u003e\n    \u003cli\u003eBolt-on spacer plate and rail for a tidy, reversible install\u003c\/li\u003e\n    \u003cli\u003eFlow-matched Bosch 52 lb injectors for consistent cylinder-to-cylinder delivery\u003c\/li\u003e\n    \u003cli\u003eOptional ethanol content sensor and Bluetooth analyser for live blend monitoring\u003c\/li\u003e\n    \u003cli\u003ePlatinum package provides a 0 to 5 V output for JB4 integration\u003c\/li\u003e\n    \u003cli\u003eBlack anodised components with stainless hardware for durability\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003ePackage options\u003c\/h3\u003e\n\n  \u003ch4\u003eBasic Kit\u003c\/h4\u003e\n  \u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e no fuel lines are included with the Basic Kit.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eFuel-It black anodised intake manifold spacer\u003c\/li\u003e\n    \u003cli\u003eFuel-It black anodised auxiliary fuel rail\u003c\/li\u003e\n    \u003cli\u003eBlack anodised aluminium and stainless fixings\u003c\/li\u003e\n    \u003cli\u003eDual supply port provision for inlets in the stock location. Contact us for guidance\u003c\/li\u003e\n    \u003cli\u003eOptional return port for use with an upgraded fuel pressure regulator\u003c\/li\u003e\n    \u003cli\u003eSix of each:\n      \u003cul\u003e\n        \u003cli\u003eFlow-matched Bosch 52 lb injectors\u003c\/li\u003e\n        \u003cli\u003eExtended-length steel studs and a spacer bolt\u003c\/li\u003e\n        \u003cli\u003eBMW OEM gaskets\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch4\u003eBronze Kit\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eEverything in the Basic Kit\u003c\/li\u003e\n    \u003cli\u003eEntry-level fuel line connection kit:\n      \u003cul\u003e\n        \u003cli\u003eTwo custom Fuel-It fittings to keep the stock connections at the HPFP and engine bay feed line\u003c\/li\u003e\n        \u003cli\u003e-6AN 3\/8 inch upgraded fuel lines\u003c\/li\u003e\n        \u003cli\u003eHigh-flow Y-adapter\u003c\/li\u003e\n        \u003cli\u003e90 degree elbow for the rail connection\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch4\u003eSilver Kit\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eEverything in the Basic Kit\u003c\/li\u003e\n    \u003cli\u003eEntry-level fuel line connection kit\u003c\/li\u003e\n    \u003cli\u003e\u003cstrong\u003eUpgraded feed hose that fully replaces the factory fuel line\u003c\/strong\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch4\u003eGold Kit\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eEverything in the Basic Kit\u003c\/li\u003e\n    \u003cli\u003eEntry-level fuel line connection kit\u003c\/li\u003e\n    \u003cli\u003e\u003cstrong\u003eUpgraded feed hose that fully replaces the factory fuel line\u003c\/strong\u003e\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated ethanol content sensor\u003c\/strong\u003e for blend monitoring. An analyser is required to view content\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch4\u003ePlatinum Kit\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eEverything in the Basic Kit\u003c\/li\u003e\n    \u003cli\u003eEntry-level fuel line connection kit\u003c\/li\u003e\n    \u003cli\u003e\u003cstrong\u003eUpgraded feed hose that fully replaces the factory fuel line\u003c\/strong\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003cstrong\u003eIntegrated ethanol content sensor\u003c\/strong\u003e\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBluetooth ethanol analyser with JB4-friendly output\u003c\/strong\u003e\n      \u003cul\u003e\n        \u003cli\u003e0 to 5 V signal for JB4 integration\u003c\/li\u003e\n        \u003cli\u003eBluetooth enabled. iPhone or Android app purchased separately\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eVehicle compatibility\u003c\/h3\u003e\n  \u003cp\u003eDesigned for BMW E-Series models fitted with the N54 engine including 135i, 335i, and 535i. Ideal for those researching BMW N54 auxiliary injectors, direct-port fuelling add-on, E85 conversion hardware, flex-fuel setup, and additional fuel rail solutions.\u003c\/p\u003e\n\n  \u003ch3\u003eInstallation and fitting\u003c\/h3\u003e\n  \u003cp\u003eProfessional installation is recommended. For supply, fitting, and setup in the UK, book with MJ Modifications in Warwickshire. Request a quote at \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003ch3\u003eFitment verification\u003c\/h3\u003e\n  \u003cp\u003eWe confirm compatibility before dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout so we can ensure this N54 auxiliary fuel rail kit is correct for your car.\u003c\/p\u003e\n\n  \u003ch3\u003ePart number\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eE-N54-PI-BA-BA-BA-550\u003c\/strong\u003e\u003c\/p\u003e\n\n  \u003ch3\u003eBrand\u003c\/h3\u003e\n  \u003cp\u003eFuel-It\u003c\/p\u003e\n\n  \u003ch3\u003eWarranty\u003c\/h3\u003e\n  \u003cp\u003eOne year Fuel-It warranty.\u003c\/p\u003e\n\n  \u003ch3\u003eLead time and important notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBuilt to order. Please allow 2 business days for shipping\u003c\/li\u003e\n    \u003cli\u003eFor off-road use only\u003c\/li\u003e\n    \u003cli\u003eEthanol sensors infer content based on the absence of petrol. Contaminated fuel can produce artificially high readings\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eGet the most from your N54 build\u003c\/h3\u003e\n  \u003cp\u003eChoose this Fuel-It auxiliary port fuel system to unlock dependable capacity, accurate ethanol blend data, and an OEM-plus install on your E-Series BMW. Perfect for flex-fuel calibrations, uprated turbo cars, and anyone chasing strong top-end fuelling under sustained load.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eCommon searches:\u003c\/strong\u003e BMW 335i E85 conversion kit, N54 auxiliary injectors, 135i flex-fuel upgrade, 535i additional fuel rail, N54 manifold spacer plate, direct port fuelling kit, ethanol content sensor bundle, JB4 ethanol integration, BMW E-Series fuelling upgrade.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Fuel-It","offers":[{"title":"Basic (No Fuel Lines Included) \/ No Thank You! \/ Standard 550cc Injectors","offer_id":55975622934914,"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_1024x1024_2x-transformed_02f51e50-c2b7-4722-ba6b-c230e0cbc693.webp?v=1763322739","url":"https:\/\/mjmodifications.co.uk\/products\/fuel-it-bmw-e-series-port-injection-n54-n55-engines","provider":"MJ Modifications","version":"1.0","type":"link"}