Josh wrote:
When I swapped to the AFR heads on my car, it leaned me out a good amount. I realize your a MAF car VS my speed density, but that is what I would guess is going on. Leaning out some, coupled with the load of WOT in high gear, is probably causing the ECU to pull timing. Do you have any data logging gear?

Even after you have a shop tune it, data logging the car at the track is always a good idea. I don't know of a shop in the NC area that has an eddy current dyno, so you're probably going to get a tune based of the way a dynojet loads the motor. It's still going to be great, and be way better than it is now, but the load it will see on the dyno is different that it will see going down the track, so data logging it (at least in the beginning) is a good idea.

Good luck with it. PM me the next time you are heading out the track. Jonecap and I hit Rockingham and Nam all the time.