Quoting Muskrat:
Quoting BarnesMobile:
How would it be the same? A boost leak means you are losing metered air. If your BOV is leaking but you have a return pipe, that air is still being accounted for, where as a regular boost leak it is not. /ubbthreads/images/graemlins/dunno.gif
It still wont be pulling as much air as it thinks it is into the cylinder. The volume of the return tube will have been pulled out of the intake stream. The effect wont be as bad as venting, but it will still be there.
+1 to it's in your head. The loud sound of the BOV can be deceptive. Just like a louder exhaust can make a car feel more peppy.
This. BOV leaks into intake then gets pressurized then leaks into the intake and there is a portion of air that is just looped in that system and not being forced in the motor. You vent that air and it leaks under your hood, not getting forced in your motor. Either way its a waste. On a maf car, recirculating a leaky bov car will still provide better driveability.