Originally Posted by snickers 
I was making well over 500whp on my GTiR setup 4-5 years ago. It was about 500whp @ 22-23 psi and i was running upwards of 30-32psi on 114 octane. wouldnt get traction on the dyno above 22psi but she held for over 60,000 miles before a mis shift over rev. Never skipped a beat. I'd say the tune is the most important part but damn those motors are strong.
Well what do you think about the ARP head studs? I talked to some UK guys and they say they are better then stock, but not by alot. He said his buddy and few others were making in excess of 500whp with stock head studs and the head started to lift, so he then went with the ARPS and made 620 or something like that with NO head lift, so I figured for the same price I would just grab the ARPS.
I also agree 100% with "its all in the tune"! Don't just take your basic bin file from calum and run it, not saying it won't run great, but from my personally experience there is ALOT more to be had with a fine tune form a good tuner!
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