they are better than your car. Geez... I am sure your car will be able to put down ~700 RWHP if you run 2 bar like them... and your not sprayin. I'm sure you'd lay some pretty good smack down on some single turbo supra's if you ran the high boost like them. I've found that Supra's just run more boost on the street than Z's... even built Z's. You've said before that you run 15-17 psi on the street... I know single turbo supras that run 22-24 psi on the street. Just gotta crank it up!