Guys thinking of going for a 9 or 10 psi pulley up from 7psi.

I have the following bolt ons etc in my signature, may run a greddy emanage with rc550 or 650 injectors.

Would I need an aftermarket clutch? Launches are not my profession thing plus i only up the car 20% of the time.

She's currently running at just over 350 bhp @flywheel.

What power increase would i see?

Thanks

 

30-40 or so.

 

I would say 10-12 hp per psi

 

or 15 hp per 1 psi

 

Thanks chaps so it's possible with a bit of luck 400bhp

 

You'll be in the market for a clutch pretty soon.

 

With 7psi you mean?

It will be a ball ache to install

 

Even with 10psi if you are not power shifting or launching you will not need a clutch although one is recommended.

 

I have seen anywhere from 12 to 17 rwhp per psi depending on how it is set up and add ons.

When you get your next dyno at higher boost note the exact pressure and horsepower change.

You can figure how much power you will make going up in boost from there if you have no other changes. With a supercharger you must remain within the efficiency range and if you go beyond it the power drops off quickly.

 

[QUOTE=Sideways,Sep 19 2010, 08:00 AM]I have seen anywhere from 12 to 17 rwhp per psi depending on how it is set up and add ons.