my stock one cant be blown through but doesnt make noise either, even vented to atmosphere, try disconnecting the intake side and shoving a cork or something in the hole in the intake hose, not the bov, and drive around like that, see if you get noise.
I took my intake pipes off to change an air filter, and the IC pipes off to shim the wastegate, and i noticed alot of oil coating the inside of both, is this a bad thing? no smoke or anything, just seemed kinda messy.
albert
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