Quote Originally Posted by Fivefingerdeathpunch View Post
Kinda sounds like the cat test causing the commanded AFR to move up to 15 or 16.

Never ran into that problem on pre 2001 vehicles.


Just a FYI, if the wideband error is setup correctly, it does not matter what the commanded air fuel ratio is. You are always getting the error based off the commanded value. So it would tell you the error at 14.7 as well as telling you the error at 11.5 commanded.

You can filter out data that you don't want or you can just take certain sections of the data you want. Like under 7,000hz and over 7,000hz.
Cat test is maxed out ect. I guesses the same about the different afr's. I'm on my 6th tune change. Still haven't gotten to wot tuning. I don't have any knock in either scans. I'm now wondering if it isn't a scanner bug, or an install issue. It could be as simple as the AFR error calculation being messed up, maybe because I had two scans without restarting. I'll rule that out next.

It's not a filtering difference, it's an overall AFR error % difference. At least I think.