Pros and Cons of a BOV ?
#2
Engine, Not Motor
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Your 13BT already has a bypass valve from the factory. It blows into the TID just after the AFM. There really isn't any benefit to fitting an aftermarket valve besides the noise.
#6
Engine, Not Motor
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People run open BOVs because they like the noise, pure and simple. I run an open BOV on my car because my car was never equipped with a BOV from the factory (NA and all).