do superchargers use blow off valves? i know the theory but i ONLY know turbo setups.

 

no i havnt seen any superchargers with blow off

 

I've seen it done

 

is it as beneficial as on a turbo set up?

 

My procharger uses one, So do vortechs.. Jackson Racing SC's dont. Depends on the style charger. And yes on a procharger and vortech, you need it.

 

centrifugal blowers do..... prochargers and vortechs.....

 

QFT

 

My vortech had one. It also blew off when decelerating. I had mad skillz

 

As a general rule of thumb, as long as the supercharger is before the throttle body, not after, then there will be some sort of BOV or bypass valve. Forcing air against a closed throttle really isn't a good idea if you have any mechanical sympathy for your turbo or supercharger, the forces are huge.

 

^^^yessir