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Old 06-27-2011, 12:35 PM   #157
Scooby Specialist
Member#: 175065
Join Date: Mar 2008
Chapter/Region: MAIC
Location: MD
2011 SWP WRX


Originally Posted by MFwrx View Post
Iv read that sone people have carried the stock bov up to 22psi no problem. Can you explain why a struggling bov would make that noise though? Like what's physically causing the sound I make during boost?
The stock bpv can go to 22psi on the STI because it is metal, but the WRX stock bpv is plastic and leaks at stage2+. Physically I cannot explain it, what does any other leak sound like though? It only happens when you are in boost, so I can only assume it is the BPV. I don't know how much power your pushing, but the stock intercooler will leak at higher power levels as well.
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Midevil is offline   Reply With Quote