No, just bought a little bit bigger nitrous and fuel jet. He has a nitrous expess system and a 75 shot is a 41/24 setup. we got some jets and are running a 43/25. One of my friends owns his own shop and his (sorry for saying ith: ) camaro runs in the 11's. He has dealt with nitrous for a long time and we have had no probs so far... And just yesterday (I was driving... ) we busted a Z28 at a red light :fawk: We talked to him afterwards and he was dumbfounded, it was a pretty close race but nonetheless we won.