Thread: What's the stock and max boost for VI STI?
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Old 21-09-2008, 10:46 AM
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I wouldn't have thought so.....but most actuators on IHI turbos will start opening the wastegate at about 9.5-10psi so the fact you are running 14 means whatever boost control your using, is working. Is it the stock 2 port solinoid?

Maybe your Y-pipe or TB pipe has a leak or split causing a lose of boost.
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