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      10-26-2020, 04:48 PM   #2
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Drives: 328xd Wagon, M2 Competition
Join Date: Jun 2018
Location: Houston

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The pressure regulation valve on the rail sometimes causes this problem.

I would look at the metering unit on HPFP (if it's second hand) or the rail control valve.


A very poor remap can do that as well.
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-2014 328d Wagon 2WD, 8HP flash, self-tuned, 270hp/430ft-lbs.
-2019 M2 Competition, Alpine White. Self-tuned 530hp
Others:
-E36 328is. 2000 Z3 Roady. 2003 VW Jetta TDI Manual. Estoril Z3M Coupe.