Quote:
Originally Posted by ericlr1225
It turns out the problem is the last thing I will consider —- HPFP. Older one is not perform consistently or let's say it fails under pressure. And I was having "cutting power" issue same as you posted. If I pushed too far, it would turn into misfire/limp mode. smoked exhaust, weird smell. Please noted my car is low mileage and only daily since I bought it. All other parts are in great condition. Conclusion: 2018 BMW M2 hpfp does fail!!!
After testing stock tune with new hpfp, I flashed stage 1acn then stage 2 acn maps and the problems never come back. (Just knocks at around low rpm every WOT). No [...]
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Nice. Let us know how yo do with the stage 2+ MM.
As far as I know you flex fuel sensor won't work with regular stage 2+ map. It has to be the MM.
I'm going to order the stage 1 hpfp since I don't plan to upgrade the turbo.
Were you also getting knock at low rpm at wot before the hpfp upgrade?