"the BBV will just vent anything that is not needed. It acts no different in the end" - That's partially what I was looking for. I'm not concerned with heat or wear, but mileage. I'm aware of KR in an 05 Comp G and understand the other things needed to run a 3.6" or smaller pulley.

Scouring the internet is what brought me here, btw. Having valid responses already is great! Thanks.