ok for every 1/4 inch smaller on the pully it gets you about 2 psi.
stock lets say 3.50 pulley is 7 psi
3.25 pulley is 9 psi
3.00 pulley is 11 psi
2.75 pulley is 13 psi
2.50 pulley is 15 psi
so if stock is 3.4 and you go to a 2.6 thats .8 difference which will bring up your boost about 6.5 psi from stock
im thinking stock is about 7 psi right?? going to 10 is most i would go before tuning, injectors etc. even 12 psi you can prob get away with. 3.0 pully prob would do the trick if the stock one was 3.5 inches.
anyone know the stock psi for a cobalt ss and pulley size??????
stock lets say 3.50 pulley is 7 psi
3.25 pulley is 9 psi
3.00 pulley is 11 psi
2.75 pulley is 13 psi
2.50 pulley is 15 psi
so if stock is 3.4 and you go to a 2.6 thats .8 difference which will bring up your boost about 6.5 psi from stock
im thinking stock is about 7 psi right?? going to 10 is most i would go before tuning, injectors etc. even 12 psi you can prob get away with. 3.0 pully prob would do the trick if the stock one was 3.5 inches.
anyone know the stock psi for a cobalt ss and pulley size??????