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N55 Stage 2 HPFP Upgrade
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N55 Stage 2 HPFP Upgrade

Dorch
In stock
$1,599.00
Not sure which harness you need? Click Here Our Stage 2 kit is a bigger, better version...
$1,599.00

Not sure which harness you need? Click Here

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 650whp and also allow for full E85 up to 500whp (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.

 

N55 HPFP Flow Capacities

The table below serves as a reference for maximum fuel flow in cubic centimeters per camshaft revolution for various N55 fuel pump options. These calculations are based on the stock N55 cam lobe unless otherwise noted (Lift Kit).
Pump Model Fuel Flow (cc/rev) Fuel Flow w/ Dorch Lift Kit (cc/rev)
HDP5 (Stock N55) 0.837 NOT COMPATIBLE
HDP5 Evo (Stock B58) 0.897 NOT COMPATIBLE
HDP6 (Stock B58TU) 1.107 NOT COMPATIBLE
Dorch Engineering Stage 1 1.221 1.818
Dorch Engineering Stage 2 1.465 2.181

NOTE: When combined with our N55 Lift Kit, this pump is capable of 900whp on E10 and 750whp on E85!

 

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 tuning@dorchengineering.com for the appropriate software changes. This change is free of charge for all of our customers.


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

 

Installation Instructions:

N55 HPFP Kit Installation Instructions

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We have a 7-day return policy, which means you have 7 days after receiving your item to request a return. There is a 15% restocking fee. For turbos there is a 25% restock fee on canceled or returned orders To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. To start a return, you can contact us at europerformancecenter@gmail.com. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted. You can always contact us for any return question at europerformancecenter@gmail.com. Damages and issues Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right. Exceptions / non-returnable items Certain types of items cannot be returned, custom products (such as special orders or personalized items),. We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item. Unfortunately, we cannot accept returns on sale items or gift cards. Exchanges The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item. Refunds We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

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