Is this on E85 or 98 octane?
Mines making around 465rwhp stock bottom end for around 10'000kms so far on 98
No issues, compression still at 160psi each pot, done 2 drag days with another coming soon, on around 21psi
But I trust my tuner 100% and I'm prepared to rebuild "when" the engine has enough
Their is no magical limit depends on alot of variables like tune/condition of engine/fuel/ max revs etc etc