Well im not aiming for any specific number Im not a dyno racer in the least bit. I was just saying what the dyno guy said to do to get another 1000 rpm out her. He said if I give her more fuel, you can take the rpm up Higher and probably get over 500hp. So I was thinking if I put the timing retard on and go to the track with a wide band and take out some timing with the boost retard I can probably rev her higher without getting her lean what do yall think? I know the tune and chip is the right way to go, so you all dont this will work? Let me get some input.