[Thalk]

Bought a 2008 335i not too long ago with 50k miles on it. Car is great.. aside from a hesitation/misfire issue I've been having with it. No CEL's, just a code stored for P0174 - Mixture Control 2 System Too Lean Bank 2. I do not believe the HPFP has ever been replaced. On cold starts the car has a very noticeable misfire, some days worse than others, but it never throws an actual CEL for it, idle seems to smooth out a little as it warms up.

When accelerating even past quarter-throttle I can immediately feel a shudder or misfire as I'm accelerating through gears. If I am WOT, the car will either pull perfectly fine, or shudder it's way through the rev range.. pretty annoying issue. I am assuming it is a bad/leaking injector or coil pack? I just did the plugs with OEM about 2 weeks ago and it did not correct the issue in the slightest.. I also notice my fuel mileage is atrocious.. but that's besides the point lol.

Any insight appreciated, contemplating calling BMW tomorrow but we will see I suppose.. I searched around but still couldn't find a good lead on it.