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Mike@N54Tuning.com Mike@N54Tuning.com is offline
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Default www.n54Tuning.com - Dorch Engineering N55 Stage1/2 HPFP Upgrade - FREE SHIP!! - 03-25-2020, 05:42 AM



N55 Stage 1 HPFP Upgrade
SKU: DE-55-1001 Categories: BMW, N55



This is a complete plug-and-play kit to support up to 550whp (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.



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 N55 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 (Stock N55) 0.837
HDP5 Evo (Stock B58) 0.897
HDP6 (Stock B58TU) 1.107
Dorch Engineering Stage 1 1.221
Dorch Engineering Stage 2 1.465
Software changes are required to run this pump. If using MHD or Bootmod3, simply check the box for our pump upgrade when flashing (coming soon). 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:

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
F22 – 235i, 235xi
F30 – 335i, 335xi
F32 – 435i, 435xi
F10 – 535i, 535xi

E92 – 335i (ONLY 2012+ models originally equipped with Bosch HPFP)
E82 – 135i (ONLY 2012+ models originally equipped with Bosch HPFP)


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Default 04-12-2020, 05:49 PM

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Default 05-03-2020, 05:28 PM

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Default 10-26-2020, 06:01 PM

Would the dorch stg1 be enough for my pure stg2 n55 running like and e30-e40 mix and making 500+whp?
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Default 10-28-2020, 04:18 PM

Quote:
Originally Posted by slowf30
Would the dorch stg1 be enough for my pure stg2 n55 running like and e30-e40 mix and making 500+whp?
Should be, but if running E mixes and upgraded turbos the stage2 would be my recommendation.

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