Think about the physics of that.... How would a BOV cause such a radical cavitation in the air flow that it would negate the exhaust gasses traveling through the turbine housing? Not possible..... Especially in an atmospheric venting situation where the air isn't even reintroduced back to the intake flow...I can't say it makes all girls excited. I am one and I don't care for the sound it's bad for your engine and I heard the turbo could spin in reverse.
Go back to stock.