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GM P01 PCM Tuning Knowledge - 4 calibration entries
These 4 entries document the GM P01 PCM: what the log shows, how the parser reads it, and what tuners changed in response. The largest bodies of evidence are Spark timing reference, MAF failure / speed-density setup reference, and MAF-failed speed-density diagnostic reference. This page shows aggregate counts only; individual KB rows, source details, and tuning findings remain available inside the signed-in app.
2
Spark timing reference
1
MAF failure / speed-density setup reference
1
MAF-failed speed-density diagnostic reference
Put the knowledge into a repeatable log
Start with the HP Tuners channel checklist, then follow the baseline, edit, and re-log revision loop to test one measured change at a time.