do i need to change anything? the car has 50lb injectors at stock fuel pressure, only concern is will my bypass valve hold the extra 3 psi? and i was considering going to a 3.3 pulley to max out the P1sc but i was told the 3.3 would slip. i run the 12 rib setup.

 

The most I ever got out of a P1SC was 10psi. I ended up switching to an F1A for just that reason. With a higher step up ratio I was able to use a bigger blower pulley which prevented belt slip. With 15 psi (and all the additional drag on the motor) I went with a big block ati damper to keep from cracking the the hub. I also stepped up to an SDCE setup which provides alot more stiffness in the procharger bracket to reduce flexing the bracket.