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Old 11-22-2011, 10:34 AM   #67
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2015 WRX STI
Terminal black pearl


Originally Posted by Schister66
As for the HG failure, does anyone upgrade head studs to ARPs before boosting higher than stock? I'm not sure if that's a industry-wide thing or not...
No one that I know of, unless they're putting in forged pistons/building the engine.

The studs/head bolts aren't the issue, proper cooling is.

EDIT: until you start getting into significantly higher boost pressures. Stock/stage2 aren't an issue.
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