I know everyone hates bov questions on this forum, I've seen them all. But I just went stage 4 with a 20g and I kinda need a new BOV pushing 20+ PSI. Just got off the dyno and made 270awhp on a mustang dyno. Not bad at all. Anyways check out this video, this is the only BOV i've ever heard that I like. Can anyone tell me what it is? I love how it flutters down low kinda, then makes a nice WOOOSH up top with full boost.