Originally Posted by MrFatbooty
I believe the issue with the stock bypass valve is that it vents back into the intake between the airflow meter and the turbo as opposed to out into the atmosphere. So were you to run something that vents to the atmosphere it would cause problems because it's subtracting air from the amount already measured by the AFM.
I guess in theory you could run some kinda aftermarket BOV and have it vent back into the intake like the stocker, but then you wouldn't get the waaa-pshh noise.
the GReddy Type-S BOV has an adapter kit for bypass valve engines...... which is kinda useless because then it just becomes a gigantic bypass valve and wont make the same pshhhhooooo sound. there are "hybrid" bpv/bov that will vent 50% of the air to the atmosphere and reroute the other 50%...... but those damned things cost $300 O_O
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In Loving Memory
R.I.P. Huan Vo aka woong
01.14.1979 - 11.19.2008