What's p.e enrich? And after driving around some more I'm back to the worse looking trims, -5.4 at WOT. I see no other indicators of running rich though, which is why I wonder about the O2 sensors. Also picking up a lot more KR than I was stock. I initially assumed it's cause it's stupid cold out, but if I have an O2 sensor telling the PCM I'm falsely running rich, that would mean I'm actually leaning out by it pulling the trims?
Is there any tests or scans I can do to figure this out? I'd rather not just throw parts at it.
