Quote Originally Posted by Adm_rsx View Post
@8psi youll crack maybe 350whp. And depending on the size turbo you use it won't even begine to shine until boost beyond 10-12psi. K series are straight up beasts.

s4 IG-petefromthestreets
I'm on 13psi now making 375. Turbo just can't make the numbers it should. About to get meth injection and leave it at 13 psi. Should put me at 400whp+.