Quote:
Originally Posted by 335xiE90
I was wrong the surging persists. Here's a 2-3 log I got this morning at WOT. Here's a log - https://datazap.me/u/matthew-pinola/logs/cmoebz0wd0001i806wqf73dfa?channels=21x3&sizes=50x5 0&sc=3-11-21 .
Things to note with the surging - It only happens after oil temp > 160, only felt between 1800-3400 RPM when not WOT. |
Cylinders 1, 4 & 5 pulled a lot of timing when you shifted into 3rd.
High and low fuel pressure look good. Someone said earlier HPFP pressures were low, but the couple of logs where the pressure was in the 700psi range were partial throttle. HPFP will only push about 700psi at idle or low throttle input, and will increase to 1500+ psi at WOT so your HPFP is fine. I doubt your secondary oxygen sensors are the culprit. You’re running open loop in WOT so o2 sensors don’t have any effect there. They will affect how the car runs in closed loop though, at idle or low pedal input when the AFRs are close to 14.7:1.
STFTs are a little high, but within +/- 10% so not alarming.
Your WGDC is doing something weird, jumping up and down. Boost solenoids might be getting tired/sticky?