Hey guys, I'm new to this forum, I recently bought a 2009 WRX a few months ago has Cobb Stage One tune and I recently purchased an HKS SSQV bov and it worked fine for the first day then next time I got the car out it worked fine the first 7 miles or so. Now when I get to about 5psi of boost it starts making a weird noise, kind of like you letting the air out of a balloon. It only does that if im driving of course, so if im just revving the blow off seems to work just fine. I was thinking it was just a vaccum hose that just needed a clamp down tighter but I put hose clamps on everything and it still seems to make that noise. Could it just be because the car isn't tuned for it? Just seems odd to me. Would appreciate any help! Thanks!