We are proud to offer the world’s first B58 HPFP upgrades! Our Stage 2 kit is a bigger, better version of our Stage 1 kit for some of the more extreme applications. This is a complete plug-and-play kit to support up to 700whp and also allow for full E85 up to 550whp (these numbers can vary quite a bit depending on tuning strategy, fuel type, etc.). There’s no cutting, no bending, no crimping, etc. This kit drops right in with full control from the DME, just like the OEM pump. All of the safety and sophistication of the stock DME remain in place.
The table below serves as a reference for maximum fuel flow in cubic centimeters per camshaft revolution for various B58 fuel pump options. These calculations are based on the B58 cam lobe. Each engine will have varying fuel flow capacities depending on the lift and number of lobes on the camshaft.
| Pump Model | Fuel Flow (cc/rev) |
|---|---|
| HDP5 Evo (Stock B58) | .954 |
| HDP6 (Stock B58TU) | 1.178 |
| Dorch Engineering Stage 1 | 1.299 |
| Dorch Engineering Stage 2 | 1.558 |
Software changes are required to run this pump. If using Bootmod3, MHD, or MG Flasher, simply check the box for our pump upgrade when flashing. Otherwise, please send your .BIN file to tuning@dorchengineering.com for the appropriate software changes. This change is free of charge for all of our customers.
Delivery Information
We offer simple, hassle-free delivery across the UK with no hidden fees.
We currently deliver to addresses within the United Kingdom only.
Delivery is completely free. The cost is already included in the price of all our products.
What you see is what you pay.
Orders are processed Monday to Friday, excluding bank holidays.
Once your order has been dispatched, you will receive a confirmation email with tracking details so you can follow its journey.
If you have any questions about delivery, please contact us.
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