HAI is really the only setup your going to get on a GP that is going to give you the best gains.
ya thats what im runnin on mine. i just said it cause he said it gives no gains at all.
2007 Grand Prix GT - Green Filter Cone Intake, 180 F Thermostat, EGR Delete, Overkill Custom Tune, Muffler Delete with Thrush Glasspack res swap, Kenwood head unit