i'm not sure if i've asked anyone here before but what is the stock psi on a '98 Grand Prix GTP and would a new pully make a big difference?
 S/C question...
 S/C question...
				i'm not sure if i've asked anyone here before but what is the stock psi on a '98 Grand Prix GTP and would a new pully make a big difference?
 
 
				yeah a smaller pully will make a noticable difference