Im looking into a T78 turbo and i wanted to know how much hp it would add?

help....

 

thats a pretty generic question, you should try searching as this turbo has been talked before... tuning, porting and set-up all have an effect on power #'s you can achieve


good luck

 

At what boost level? With what mods?

Generally speaking, most T78-equipped cars will make around 400 rwhp at around 14-17 psi of boost.

 

15 psi boost, just a t78 kit....

 

tunning is such a HUGE factor with this car, I gained 40RWHP from ONLY adding an ignition amp and slightly leaning out the higher rpms, and my car had already been tuned previous to doing this. (I'm on stock twins)

I am just saying be more concered about tunning