Originally Posted by Trannyman95

Why do you want to install an AFC if you have a tuner? You can adjust your entire maf table with the tuner and is going to do the exact same thing as an AFC and is one less thing to plug in and fail. Even though you currently are maxing out the maf why not go WOT? you can work on plenty of things in the tune go help that out, or just go to a larger throttle body or maf sensor to give yourself more head room. If you used a ZZP file and it was for an 01 or newer car then likely the perf shift tables are still stock since 01 and up never had the performance shift button and I dont think they modify those tables but it should certainly be changed on an 00 and earlier pcm.