98gst14b
15+ Year Contributor
- 453
- 0
- Jan 24, 2006
-
Keys,
Florida
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You should log your wideband in ECMlink.
Holy boost creep!!! Is your EBC working? You say it was a 25psi pull, but the BoostEst rises to 40psi. This will obviously cause your IDC %'s to go sky high.
Your front o2 sensor doesn't seem to be reading correctly at WOT. Is it cycling correctly at idle?
You need to check "Lock intake temperature and barometric pressure" since you are using the GM MAF cable. This is found if you right click on the graph, click ECU config (from log), then click ECU Inputs along the left side.
And lastly, you have a knock sensor DTC. The DTC listing is found just above the ECU inputs screen.
Please start with your fuel trim adjustments. The instructions are based off of V2, but the idea is the same.
GMAF Calibration for LTFT
Then work on your AFR goal. This will be moving the fuel sliders instead of the airflow sliders as in the previous link. You should be logging your wideband before you do this.
If I had to guess, the airflow reading is the result of a boost leak. That will cause inflated airflow readings at WOT and a crazy rich mixture.I think my airflow is too high. Should i try MAF Comp settings?