Thanks for the responses, Rich how much boost are you running, or are you even supercharged. also im gonna be starting with just a lq4 out of a silverado. Zeake Ive had my truck about 6 months, and im not running any of the whipple computers, my truck is the flex fuel model and because of that it had big enough injectors that it could easily handle the charger i will have to go through your links and check them out thanks for the help, and i do need to pin my pulleys cause it keeps slipping no matter how good i put it in there so that will be on the to do list