I'm trying to get the fuel trims squared away on my '01 Vette. It has a Magnacharger and a 220/226 cam. The trims were running around -14 to -20. So, I failed the maf, and after 4 or 5 runs using the copy paste special to the VE table got them down to around -4. So, I re-enabeled the maf and made a run -- now the maf table is calling for -15 in all cells I hit, and it was around 0 prior to Ve tuning!! So I did a copy paste special to the maf table and made another run. Its still calling for -15, plus now the trims are going positive. What now, get the maf tuned out and go back to the trims via the VE table, or what?? I feel like I'm going in a big circle.