Hi all, I have a 2002 Z with an stock 430hp LS3, stock fuel pump/injectors. My question is at ignition ON fuel pressure is at 58psi and engine running its 66 psi. Will this affect my tune or cause any other troubles? It is a track car only so it lives at hi revs, THX!

 

If your car was tuned that way it should be fine if it runs good. I have heard high fuel pressure can lean the engine out at high RPM if it was not tuned that way.