Thanks for the advice but I thought that to get a good performance tune you needed to run the truck on a dyno and adjust acordingly? If i get the nelson PCM and later a get like a cam and heads all i have to do is just call them up and tell them that and they can tune for what i have? No dyno runs needed? Nelson sounds really good....jsut a few questions i have. After the alky adn the 4.56's i think that will be my next mod. Thanks forthe help and any other advice you oculd give me whould be great. Like trans mods and stuff like that.