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Registered
Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 11,334
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Hopefully Chris chimes in soon since he's the guru here. Seems really strange to have boost creep from just sitting with no changes. I can't think of anything you haven't looked at.
I assume when the wastegate spring was removed, the valve moved freely?
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2014 Cayman S (track rat w/GT4 suspension)
1979 930 (475 rwhp at 0.95 bar)
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