Dorch 2.5 HPFP rail pressure oscillations on 2015 535i xdrive (updated with 10.93@124 quarter mile video)

mikesrex

Specialist
Mar 11, 2018
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2015 X5 and 2008 535i
yes i believe it’s 7”. It’s the biggest they offered for the f10. I had a hard time installing it for sure lol. It barely fit.

One thing I’m looking at is injector upgrades. People say the eu5 injector from the s63 have a little more flow and are better for running ethanol blends. Does anyone have feedback?
 

wheela

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Jun 4, 2021
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Twin Cities, MN
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2015 e84 X1 35i Msport
yes i believe it’s 7”. It’s the biggest they offered for the f10. I had a hard time installing it for sure lol. It barely fit.

One thing I’m looking at is injector upgrades. People say the eu5 injector from the s63 have a little more flow and are better for running ethanol blends. Does anyone have feedback?
The f80 guys do that all the time, it's a pretty common mod over on f80post.
 

wheela

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Jun 4, 2021
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Twin Cities, MN
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2015 e84 X1 35i Msport
Are you still on stock lpfp, and have you done any weight reduction on your car?

Edit: PS, you need to change the title of this thread! You have a 10 second n55 5-serirs hidden under the title under oscillating rail pressure, lol🤣🤣🤣
 

mikesrex

Specialist
Mar 11, 2018
79
41
0
Ride
2015 X5 and 2008 535i
Are you still on stock lpfp, and have you done any weight reduction on your car?

Edit: PS, you need to change the title of this thread! You have a 10 second n55 5-serirs hidden under the title under oscillating rail pressure, lol🤣🤣🤣
Still on stock lpfp. Exhaust (71lb) replaced with turn down and 132lb of passenger seats removed.
 
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mikesrex

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Mar 11, 2018
79
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0
Ride
2015 X5 and 2008 535i

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Zackattack

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Jul 6, 2024
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Anyone here who had problems with Dorch 1.5 to N55, has the correct file in from Dorch as well as pressure from the low pressure pump.. getting the wrong code on the drive train and low pressure on the Fuel Rail.