ORIGINAL: MexGT

If any1 is used to the g-tech ss, i'm having some problems with mine, no matter how many runs i do, i can't get my stock 07 GT under 6 sec, i've made like 7 runs and the fastest i've gone is 6.07 sec, acording to the G-tech. I do have better gripping tires than stock (yokos advan sport 255/45R18 on stock rims) I've readed the manual several times and i really can't figure out whats going on, i have my "pitch" factor in 2, don't think it can be stiffer on the stock suspension.
Anyway every1 in automatics are getting from 5.0 - 5.2 secs to 60 mph, i'm guessing its my g-tech the problem?
My launches are perfect, rev up to 2k, no trac ctrl, and slam the pedal to the floor, no wheel spin at all, no drama no nothing just a straight clean launch.
What could it be? any suggestions? Thanks