Dorch HPFP Chirp

Boostedphil698 · 06-15-2021, 08:49 AM

Before I go and buy this fuel pump in the future. Has the chirp ever been fixed with these? Thanks.

ctt300 · 06-15-2021, 11:55 AM

This only occurs on the stage 1 pump, not the stage 2 one and BM3 has a separate Stage 1 calibration file increasing the PSI to about 2800 vs 2400. Seemed to cure most but not all of the squealing noise. Dorch is still working on this AFAIK. Check out the M2 N55 forum here for more.

Boostedphil698 · 06-15-2021, 03:00 PM

Quote:

Originally Posted by ctt300

This only occurs on the stage 1 pump, not the stage 2 one and BM3 has a separate Stage 1 calibration file increasing the PSI to about 2800 vs 2400. Seemed to cure most but not all of the squealing noise. Dorch is still working on this AFAIK. Check out the M@ N55 forum here for more.

Gotcha. Yeah I'm looking to get the stage 2 pump.

n55david · 06-15-2021, 05:36 PM

Quote:

Originally Posted by Boostedphil698

Quote:

Originally Posted by ctt300

This only occurs on the stage 1 pump, not the stage 2 one and BM3 has a separate Stage 1 calibration file increasing the PSI to about 2800 vs 2400. Seemed to cure most but not all of the squealing noise. Dorch is still working on this AFAIK. Check out the M@ N55 forum here for more.

Gotcha. Yeah I'm looking to get the stage 2 pump.

then it's fine

06-15-2021, 08:49 AM	#1
Boostedphil698 Major 436 Rep 1,116 Posts Drives: 2015 BMW 435i Xdrive MSport Join Date: Mar 2020 Location: Greater Philadelphia iTrader: (0) Garage List 2015 BMW 435XI [0.00] 2009 Honda Civic [0.00]	Dorch HPFP Chirp Before I go and buy this fuel pump in the future. Has the chirp ever been fixed with these? Thanks. __________________ 2015 435i Xdrive (Klaus) Stanced 8th Gen Honda Civic (The daily)
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06-15-2021, 11:55 AM	#2
ctt300 Private First Class 47 Rep 142 Posts Drives: F30 335i Join Date: Feb 2019 Location: Sunny Florida iTrader: (0)	This only occurs on the stage 1 pump, not the stage 2 one and BM3 has a separate Stage 1 calibration file increasing the PSI to about 2800 vs 2400. Seemed to cure most but not all of the squealing noise. Dorch is still working on this AFAIK. Check out the M2 N55 forum here for more. Last edited by ctt300; 06-16-2021 at 12:17 PM..
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