Yeah, i'd agree that the tuning didn't help, especially if the piston was that chewed up. It was more of a curiosity question of how much boost the teener handled for a "period of time" lol i followed another thread on here where someone was eyeing an ebay turbo setup and was thinking it'd live through 8-10 psi with good tuning on an efi setup. apparently there's some validity to that. cool thanks!