patSS/00

iTrader: (6)

If one O2 is spikier/more active than the other what does that mean? This is only seen at idle, or maybe that's just where it's obvious. Scan file attached, starting frame 3640 is a good example, but it's all through. While b2 has a smooth loop, b1 will have one or more shorter spikes. Should I change the CL proportional settings for one of them? Replace one? Ignore it?

(Posted this on hptuners forum but no response.)

Russ K

iTrader: (1)

Looks normal to me. And your LTFT's are very close to each other. If there was an actual O2 issue, the fuel trims would be a lot different between B1 & B2.

Russ Kemp