stick with the stock pulley and start with stock gtp bin and go from there. Definitly get a wideband and a tuner or you will be wasting alot of your time trying to tune your car n/b and still not get anywhere. I recommend a dhp
Im going to have brian tune my **** and I'm pretty sure he knows what he is doing. Going to go get gaskets and a Wideband today then order my headers and aeroforce.