Better access from the top than bottom but hard to get at either way. Modified my O2 socket to 1/2" slot at the drive end to be able to get it over the cable on the sensor without F'in it up.

3/8" drive and a 3" extension on the socket worked out.

I'll log it later but I had no real issues other than wandering LTFT's before, more of a PM here with 31k miles on it, 22k tuned and some leaded 110 in the past.

 

Sub'd for findings.

 

LTFT's seem to have settled in with less wandering but I'll update it after a few more days. Logged a brutal flogging or two today but after dialing in the MAF cal at WOT I need to let it settle in again.

 

Did you do reset VCM in the scanner?

 

Loaded a new MAF cal tweak in a cell or 3, didn't that reset it when I did a write cal?

 

Tweaked the tune this week, much easier to get it dialed in with the new O2, I guess the old one was causing me more grief than I realized.

Beat the hell out of it on the way home tonight. Some damn Subi thought he was fast. lol.

Anyway, some areas of the MAF are + 1~2% and some are -1~2%, but overall LTFT's stayed between -0.8 and + 0.8 the whole trip including stop & go crap.

Running quite well. I'm going to tweak the last % or two tonight and log it next week.

New O2 FTW!

 

Popped out the O2 this evening... it looks surprisingly... normal. Nothing beyond what I would think something directly in the exhaust flow would look like.

No clogging of the holes or anything. I guess I'll pop the new one on just to see if there's any change.


New vs Old






Update:
Been back for a while from the test drive. It maybe idles a tad bit better, but the random erratic AFRs still happen. I'm possibly going to look into checking the evap purge system. Perhaps it's just the nature of the beast...