Hey Guys,
Having some issues with my tune right now and after a few revisions with my tuner the fuel trims at idle are still pretty high (15-20%). Looking for suggestions.
FBM turbo kit. I have looked over all the intake piping and cannot find a leak. Manifold pressure at idle is around 0.32 bar, vacuum at idle is -19 mm/Hg, which from what I've read on here is normal.
The trims look a lot better under light throttle and cruising around, really just having the issue at idle. I'm leaning towards and exhaust leak, but this issue only popped up after I adjusted/tighted up my IC piping right before the throttle body.
Front O2 sensor is relatively new and maf sensor was cleaned recently so I think I can rule those out.
I'm trying to spend as little time laying on my freezing garage floor as I can so any help is appreciated. TIA
https://datazap.me/u/motox16/1212-idle?log=0&data=30