Dorch Engineering is proud to offer a game-changing product for the S55 community! With this innovative solution you are able to add up to 38% MORE fuel flow out of the OEM HPFPs. Dorch start with Genuine BMW vacuum pump cores and install the Dorch Engineering Cam within the OEM assembly using their proprietary manufacturing tooling and validation equipment. What you end up with is far more fuel flow in a very simple and clean package, all while utilising the OEM HPFPs. Since the S55 engine uses some of the smallest fuel pump cams in the Bosch lineup, we are able to achieve this additional flow without sacrificing any of the longevity or reliability of the OEM pumps. There’s no cutting, no bending, no crimping, etc. This kit drops right in like factory and it does not require any special tuning to get up and running. All of the safety and sophistication of the stock DME remain in place.
NOTE: The S55 fuel system is very much limited by the injectors. In order to see the true benefits of this kit, it is highly recommended to upgrade to the larger EU5 Injectors.
Software changes are NOT required to run this upgrade. However, Dorch do have pre-set optimised maps available via Bootmod3 and MHD. Simply check the box for their “Lift Kit” upgrade when flashing.
- BMW F80 M3 (2014-2018)
- BMW F82 M4 (2014-2020)
- BMW F83 M4 (2014-2020)
- BMW F87 M2 Competition S55 (2018-2020)
- Dorch Vacuum Pump Assembly
- Vacuum Pump Sealing Cap
- Vacuum Pump Gasket
See fitting instructions here.
Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated Race Only and are solely for competition/off road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may be in violation of local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.
We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.
We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.
All in stock products ship the same day if ordered before 2pm GMT
For out of stock items we will contact you with an estimated wait time if not otherwise specified above.
We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy
All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.