Hey guys I email Justin over the weekend & asked him a few questions.Fast response less than 2 days.He told me for firmer shifts go +25% & for my new intake go 4% fuel @ WOT.I did this last night & tested it quickly(seems firmer & better) but I'm going to drive it more today to find out.I'm wondering what you guys think or know about this.By the way I had a drop in K&N filter & now I have a AFE stage 2 CAI.