I think Bill Hahn IS a quality minded vendor that puts plenty of time into his product limitations. My dealings with him and his guys has been nothing but satisfying, interesting and educational. My impression is that he may have more boost experience with the ecotec than anyone. His company is even referred to in the GM ecotec engine build book. With that said, I think it is common knowledge that once you get up around 15 psi. you start running into octane and valvespring problems. Sounds like the three stooges got their hands on a pretty nice ride and fried it.

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Mysterious, Ebony w/ everything but OnStar and XM.
Hahn Stage III
Greddy Profec Boost Controller
Greddy BOV Upgrade
Zeitronics A/F & Boost Gage
Hi-Flow Converter, Magnaflow Cat Back
Goodyear Eagle D3's-WOW
Stabilizer Kit Upgrade
"Pontiac Racing" Illuminated Wind Restrictor
Power Steering Reservoir Move Mod
Dashhawk
Snow Perf. Methanol Injection