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      02-21-2026, 05:25 PM   #15
itranyesterday
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Drives: 2012 135i M-Sport 6MT
Join Date: Aug 2025
Location: SF Bay Area

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Quote:
Originally Posted by PerformanceEngSolutions View Post
grywng could be the HPFP, injectors, or rail pressure sensor. If your car long cranks on a cold start then it’s the HPFP. Is it long cranking?
Let's just say I could grab a cup of coffee before it finishes cranking. Before tuning MHD Stage 1 it was maybe 3-4 sec now it's closer to 5-7.

Any recommended DIY instructions/video you have on hand for removing HPFP to ship over?
Appreciate 0