It was a 1999 camaro LS1, We put in a cam, I did the auto VE, I got it tuned in pretty close, went back to MAF and it ran super lean, I got on here and asked why...was told to tune the MAF, did that and it still just went way lean. This was a while ago and the guy is just happy with it SD, then he took it off the road for the winter so I never did get it back to figure it out yet. I will try to find the post