are you guys still running the stock computer? I finally got someone to work my night for me and went down to the street drags last nite to see how the vette goes after all the mods. In one word CRAP. computer cut in at 5600 and killed me. ran consistant 15.21 all nite tho.:thumbsup: Every car i went up against got me 3/4 track including a porsche GT2. he was my biggest surprise.really thought he would do me on the line. Anyway i know the heads are a hold back but should i go to a aftermarket comp ?