{"product_id":"dorch-engineering-s55-lift-kit","title":"Dorch Engineering S55 HPFP Lift Kit - BMW F80 M3, F82 M4, F87 M2 Competition\/CS - High Pressure Fuel Pump Cam Upgrade in Vacuum Pump Assembly - Plug \u0026 Play DI Fueling Upgrade, HDP5, BM3\/MHD Ready, Up to 38% More Fuel Flow - F8X Fuel System Upgrade","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003cp\u003e\u003cstrong\u003eDorch Engineering S55 Lift Kit\u003c\/strong\u003e delivers the extra fuelling headroom serious S55 builds demand. By increasing high-pressure pump displacement by up to 38 per cent inside a genuine BMW vacuum pump housing, this cam-lobe upgrade raises DI pump volume while keeping factory-like manners, stock safety strategies and everyday drivability intact. Perfect for F80 M3, F82 M4 and F87 M2 Competition including M2 CS.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat makes it a winning S55 fuelling upgrade\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eUp to 38 per cent more pump volume for stronger, safer fuelling under load\u003c\/li\u003e\n    \u003cli\u003eDrop-in vacuum pump assembly with integrated Dorch cam technology\u003c\/li\u003e\n    \u003cli\u003eNo line cutting, bending or crimping required for installation\u003c\/li\u003e\n    \u003cli\u003eRetains all factory ECU protections and stock-like cold start behaviour\u003c\/li\u003e\n    \u003cli\u003eBuilt around Bosch HDP5 architecture for a robust, factory-grade solution\u003c\/li\u003e\n    \u003cli\u003eIdeal for tuned F8X platforms seeking reliable fuel system headroom\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eHow the displacement lift translates\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHDP5 stock S55: 1.527 cc per camshaft revolution\u003c\/li\u003e\n    \u003cli\u003eHDP5 with Dorch S55 Lift Kit: 2.100 cc per camshaft revolution\u003c\/li\u003e\n    \u003cli\u003eDorch Stage 1 HPFP with Lift Kit: 2.857 cc per camshaft revolution\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCalibration and mapping\u003c\/h3\u003e\n  \u003cp\u003eRuns on the standard software without coding. If you want to optimise, preset options exist in Bootmod3 and MHD. Simply select the Lift Kit option when flashing.\u003c\/p\u003e\n\n  \u003ch3\u003eInjector guidance\u003c\/h3\u003e\n  \u003cp\u003eThe stock injectors limit the system. To fully realise the added pump volume, we strongly recommend moving to the larger S63 EU5 injectors.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat is included\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eDorch vacuum pump assembly with integrated cam upgrade\u003c\/li\u003e\n    \u003cli\u003eVacuum pump sealing cap\u003c\/li\u003e\n    \u003cli\u003eVacuum pump gasket\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBMW F80 M3 - all variants\u003c\/li\u003e\n    \u003cli\u003eBMW F82 M4 - all variants\u003c\/li\u003e\n    \u003cli\u003eBMW F87 M2 Competition and M2 CS\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eReal-world results you can trust\u003c\/h3\u003e\n  \u003cp\u003eWe have fitted this solution on customer S55 builds and have been consistently impressed by the stable rail pressure, smooth idle and stock-like refinement, even on demanding fast-road and track-day setups. Our customers love the confidence it brings to their power goals without compromising reliability.\u003c\/p\u003e\n\n  \u003ch3\u003eFitting and support\u003c\/h3\u003e\n  \u003cp\u003eProfessional installation available at \u003cstrong\u003eMJ Modifications\u003c\/strong\u003e in Warwickshire. For a fitted price or to book workshop time, request a quote at \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e. Mail order supply with fast UK shipping is also available.\u003c\/p\u003e\n\n  \u003cp\u003eSearch-friendly terms to help you find what you need: BMW M3 F80 fuel system upgrade, BMW M4 F82 fuelling kit, M2 Competition direct-injection upgrade, S55 fuel delivery solution, Bosch HDP5 cam lift, high pressure pump displacement increase, S55 vacuum pump assembly upgrade, factory ECU safe fuelling, BM3 Lift Kit option, MHD Lift Kit option, S63 EU5 injector compatible, F8X performance fuelling.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Performance M","offers":[{"title":"Default Title","offer_id":55975222772098,"sku":"S55","price":1499.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/S55LK-Final2-800x600-1__79673.1632745584_701b1d18-1b7b-402d-ae0a-29cebebc64d9.jpg?v=1763320884","url":"https:\/\/mjmodifications.co.uk\/products\/dorch-engineering-s55-lift-kit","provider":"MJ Modifications","version":"1.0","type":"link"}