{"product_id":"dorch-engineering-n55-stage-1-hpfp","title":"Dorch Engineering N55 Stage 1 HPFP","description":"\u003cdiv\u003e\n  \u003cp\u003eUnlock reliable, repeatable fuelling for your turbocharged six-cylinder BMW. This Stage 1 high-pressure fuel pump upgrade from Dorch is a true direct replacement for the factory unit, built to deliver the extra headroom enthusiasts need while keeping OEM drivability. Expect support for up to 530 whp on E10, depending on calibration and ethanol blend, with full factory-style control via the DME for worry-free performance on road and track.\u003c\/p\u003e\n\n  \u003ch2\u003eWhy this uprated fuel pump\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eGenuine drop-in solution; no cutting, bending or crimping\u003c\/li\u003e\n    \u003cli\u003eRetains all stock ECU safety strategies and diagnostics\u003c\/li\u003e\n    \u003cli\u003eHeadroom for hybrids and bolt-ons aiming for 500+ whp on E10\u003c\/li\u003e\n    \u003cli\u003eSmoother high-rpm fuelling and improved duty cycle margins\u003c\/li\u003e\n    \u003cli\u003eEthanol-friendly performance for blends such as E10 and beyond\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eReal-world results\u003c\/h2\u003e\n  \u003cp\u003eWe have installed this pump on multiple customer cars and daily drivers. Feedback has been consistently positive for start-up behaviour, idle quality and wide-open-throttle stability. It is a proven upgrade that lets your tuner keep rail pressure where it belongs under load.\u003c\/p\u003e\n\n  \u003ch2\u003eSoftware setup\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eMHD or Bootmod3 users: simply tick the fuel pump upgrade option when flashing\u003c\/li\u003e\n    \u003cli\u003eAll other setups: email your .BIN file to tuning@dorchengineering.com for the correct calibration changes\u003c\/li\u003e\n    \u003cli\u003eMap revision is provided free of charge for Dorch customers\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eWhat’s in the box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eHigh-pressure fuel pump with mounting hardware\u003c\/li\u003e\n    \u003cli\u003eHigh-pressure line\u003c\/li\u003e\n    \u003cli\u003eLow-pressure line\u003c\/li\u003e\n    \u003cli\u003eLow-pressure line bracket\u003c\/li\u003e\n    \u003cli\u003ePlug-and-play adapter harness\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eFlow comparison reference\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eHDP5 (stock N55): 0.837 cc\/rev\u003c\/li\u003e\n    \u003cli\u003eHDP5 Evo (stock B58): 0.897 cc\/rev\u003c\/li\u003e\n    \u003cli\u003eHDP6 (stock B58TU): 1.107 cc\/rev\u003c\/li\u003e\n    \u003cli\u003eDorch Stage 1: 1.221 cc\/rev\u003c\/li\u003e\n    \u003cli\u003eDorch Stage 2: 1.465 cc\/rev\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eCompatibility\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eF87 M2\u003c\/li\u003e\n    \u003cli\u003eF20\/F21 135i, 135xi\u003c\/li\u003e\n    \u003cli\u003eF22\/F23 235i, 235xi\u003c\/li\u003e\n    \u003cli\u003eF30\/F31\/F34 335i, 335xi\u003c\/li\u003e\n    \u003cli\u003eF32\/F33\/F36 435i, 435xi\u003c\/li\u003e\n    \u003cli\u003eF10\/F11 535i, 535xi *\u003c\/li\u003e\n    \u003cli\u003eF25\/F26 X3\/X4 35i *\u003c\/li\u003e\n    \u003cli\u003eF15\/F16 X5\/X6 35i\u003c\/li\u003e\n    \u003cli\u003eE8X 135i *\u003c\/li\u003e\n    \u003cli\u003eE9X 335i *\u003c\/li\u003e\n    \u003cli\u003eE84 X1 35i *\u003c\/li\u003e\n    \u003cli\u003eE70\/E71 X5\/X6 35i *\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e*Only 2013+ models with OE Bosch high-pressure pump. Not compatible with 2011–2012 N55 vehicles.\u003c\/p\u003e\n\n  \u003ch2\u003eFitting and support\u003c\/h2\u003e\n  \u003cp\u003ePrefer professional installation and setup in the UK Our workshop at MJ Modifications in Warwickshire can supply, fit and arrange mapping support. Request a quote via info@mjmodifications.co.uk.\u003c\/p\u003e\n\n  \u003ch2\u003eSearch-friendly terms to help you find the right upgrade\u003c\/h2\u003e\n  \u003cp\u003eBMW N55 fuel pump upgrade, high pressure fuel pump replacement, direct injection pump, Stage 1 fuel system, BMW turbo six fuelling, M2 fuel pump, 335i fuel pump, 435i fuel pump, 535i fuel pump, 135i fuel pump, X3 35i HPFP, X5 35i fuel pump, MHD pump upgrade, Bootmod3 pump upgrade, E10 ethanol compatible, plug and play HPFP, uprated DI pump for N55, BMW performance fuel system, track-ready fueling, remap required HPFP, DME integrated fuel pump.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Performance M","offers":[{"title":"Default Title","offer_id":55975221887362,"sku":"DE-55-1001A","price":1121.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/N55-HPFP-Kit-Rev2-800x600-1__55186.1632745238_e3023562-3ce8-4c88-9810-45750887fa7e.jpg?v=1763320882","url":"https:\/\/mjmodifications.co.uk\/products\/dorch-engineering-n55-stage-1-hpfp","provider":"MJ Modifications","version":"1.0","type":"link"}