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Old 07-13-2009, 09:08 PM   #124
wrxsti.l
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Member#: 156973
Join Date: Aug 2007
Chapter/Region: International
Location: Adelaide, Australia
Vehicle:
2002 ADM WRX STi
STi Black/Blue

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BPV should remain closed until 20-26psi depending on which BPV you have. So it all depends on what pressure you test at. If you want to test at pressures over 20psi, I'd say cap it off to ensure it doesn't bleed the pressurised air out while you are testing.
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