ok, so its been about a month now and i have a 2.9 pulley, stage 2 belt, 42lb injectors, stage 3 pcm, heat exchanger, magnaflow exhaust and cai. and i am boosting around 13psi on the street just on a side street, and im doing about 15psi on the highway in higher rpms. i know 2.9 pulley should do about 17psi. i wanna be around 15ish, 16psi all the time. so what is the problem?? i was thinking a tune would deff. be a good idea to help this problem... so any ideas????