is 15 psi safe to run on a stock engine block. r superchargers very street able

 

Yes they are very streetable but 15psi is too much for a stock motor.I would say 10psi would be the max,and thats with a motor thats in good condition and with a good tune.

 

Its been proven that a well tuned s/c'd engine if driven right will get better gas milage then a n/a car. I, pretty sure 8psi is all your gonna wanna go with a stock engine, any more and you'll be getting alot of KR

 

I wouldnt go over 6-8psi on stock engine w/o intercooler. My cobra is running at 16psi with 3 core intercooler