Dorch Engineering N55 DS15 HPFP Upgrade

We’re proud to introduce our latest generation of pumps! Our widely successful “Dorch Stage 1” (DS1) has been replaced with our latest and greatest creation; the DS15. This new pump is our “Stage 1.5” which has been completely redesigned and optimized from the ground up. Externally we’ve updated the pump packaging to provide improved hose routing for even easier installations. Internally, we’ve reworked the pressure chamber, spring rates, and plunger depth, and completely optimized the volumetric efficiency of the pump. This is now a 250-bar capable pump and here are the gains to be expected at 200 bar:

This is a complete plug-and-play kit to support up to 550whp on E10 fuel (this number can vary quite a bit depending on tuning strategy and the blend of ethanol). 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. Software changes are required to run this pump. If using MHD or Bootmod3, simply check the box for our pump upgrade when flashing. Otherwise, please send your. BIN file to [email protected] for the appropriate software changes via WinOLS.

Beyond the pump performance, why choose Dorch?

• PLUG AND PLAY: This kit is truly 100% plug-and-play OEM fitment. Our kit is equipped with everything you need, including our 250-bar capacity hardline to effortlessly connect our HPFP to your fuel rail.
• LIFETIME WARRANTY: The reason we can offer this is simply because our pumps are THAT reliable. That said, on the slim chance you have an issue, we’ve got your back!
• CUSTOMER SUPPORT: Ask around! It’s no secret that we offer unrivaled 24/7 support with REAL help. You’re an email away from professional engineers, technicians, and our tuner, who can solve anything you throw at them.
• TUNING SUPPORT: We aren’t just a hard part manufacturer. We have a dedicated calibration engineer in-house who painstakingly develops all of our HPFP files using OEM calibration tools and supports a global tuning network.

Kit Contents:

• Dorch Lifetime Warranty
• HPFP w/ Hardware
• High Pressure Line
• Low Pressure Line
• Low-Pressure Line Bracket
• Plug-n-Play Adapter Harness

Kit Fitment:

F87 – M2

F20/21 – 135i, 135xi
F22/23 – 235i, 235xi
F30/31/34 – 335i, 335xi
F32/33/36 – 435i, 435xi
F10/11 – 535i, 535xi *
F25/26 –  X3/X4 35i *
F15/16 – X5/X6 35i

E8X – 135i *
E9X – 335i *
E84 – X1 35i *
E70/71 – X5/X6 35i *

*ONLY 2013+ models with OE Bosch HPFP
KIT NOT COMPATIBLE with 2011-2012 N55 Vehicles