AFRs are erratic and drifting rich

[silver_cobra_01]

It might seem extreme, but try writing another quick tune and loading it. See if things act normal. I've had a tune go wonky while adjusting things. I ended up starting over on that one.

Worth a shot for sure. Thanks.

 

[silver_cobra_01]

Okay so started it again this morning. Got to log a true cold start this time. I split it into three parts this time. I think the most important is comparing the AFR at the end of each log. By the end of this log it was idling around 12-12.5. This is still the exact same tune as the other logs I've posted. The only difference is that it sat overnight since the last log. Hopefully this gives a better idea of what I mean by "drifting rich".

 

[MG0h3]

I'm in open loop so the O2's shouldn't be affecting the commanded fueling but it sure seems like it is. The front O2s have already been replaced. Assuming this is the issue, do you have any suggestions on troubleshooting or fixing?

I'm hoping I'll be able to get multiple datalogs tomorrow to show that the same tune is progressively running richer on after each start.

My bad. Missed where you were in open loop


“BLM is doing God’s work”
2KblackGT

svtperformance.com mobile app