Dorch Engineering S55 Lift Kit is the must-have BMW S55 high pressure fuel pump upgrade for serious BMW M enthusiasts. This plug-and-play S55 HPFP lift kit increases fuel pump output by up to 38 percent while retaining OEM reliability, drivability and the full safety control of the stock DME. Designed for the F80 M3, F82 M4 and F87 M2 Competition, it is the cleanest way to unlock more fuel flow from the factory Bosch pumps without cutting, bending or crimping any lines.
This Dorch Engineering solution starts with genuine BMW vacuum pump assemblies and integrates precision Dorch cam technology inside the OEM housing using proprietary tooling and validation. The S55 platform uses some of the smallest Bosch fuel pump cams, which is why this cam upgrade yields a substantial increase in flow without compromising longevity. It drops in like factory, requires no special tuning to run and keeps all OEM safeguards active.
Why choose the Dorch Engineering S55 Lift Kit
- Up to 38 percent more fuel flow from OEM S55 HPFPs for stronger, safer fuelling on tuned S55 engines
- True plug-and-play BMW S55 fuel pump upgrade with OEM fit and finish
- No coding and no custom tuning required to operate
- OEM reliability and DME safety retained
- Ideal for F80 M3, F82 M4, F87 M2 Competition performance builds
- Clean installation with no cutting, bending or crimping
S55 HPFP flow capacities
- HDP5 Stock S55: 1.527 cc per camshaft revolution
- HDP5 with Dorch S55 Lift Kit: 2.100 cc per camshaft revolution
- Dorch Stage 1 HPFP with Lift Kit: 2.857 cc per camshaft revolution
Tuning and calibration
Software changes are not required to run this upgrade. For those looking to optimise, preset maps are available via Bootmod3 and MHD. Simply select the Lift Kit option when flashing.
Injector recommendation
The S55 fuel system is limited by the factory injectors. To realise the full benefit of the increased pump flow, we highly recommend upgrading to the larger S63 EU5 injectors.
Kit contents
- Dorch vacuum pump assembly with integrated cam upgrade
- Vacuum pump sealing cap
- Vacuum pump gasket
Vehicle fitment
- BMW F80 M3 all variants
- BMW F82 M4 all variants
- BMW F87 M2 Competition and M2 CS only
Perfect for BMW S55 performance builds
If you are searching for a BMW S55 HPFP upgrade, BMW M3 M4 fuel pump upgrade, S55 lift kit, Dorch S55 lift kit, S55 high pressure fuel pump cam upgrade or a reliable fuelling solution for tuned F8X cars, this is the proven, OEM-plus path. Increased fuel headroom supports stronger midrange and top-end on S55 engines while keeping stock-like manners.
Installation and support
Professional fitting available at Nforcd in Warwickshire. For a fitted price or workshop booking, request a quote at Sales@nforcd.com. We also supply the kit for mail order with fast UK shipping.
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