Hooked up my atap to the pickup earlier tonight. It was getting 2-3 degrees knock at top end, but it looked like it was running a little lean. Where do you want the o2s at?? I was seeing .865-.870. My other car likes .925, but that is also a blown car. I was guessing that it should be closer to .900.

 

anyone??

 

I see .950+. My AFR is 12.8:1 N/A.

 

My truck ran best with .870-.880 NA.