This is the first time I've ever even heard of it being the bov. It's a $300 bov and its a HKS, so I am almost certain it's not the bov. My best was a 14.3 on the track with a shitty launch. I was running the 14.3 with the HKS bov and I got the car with the bov on before I did anything at all it had it. When I hit the 14.3 I was running it with the bov, manifold, up pipe, and down pipe. I didn't have the intake, cobb, or 3" exhaust. Oh, and btw I was running it with a down pipe to the stock resonator, to nothing. It has no muffler (the guy took it off when I bought the car) and when I put the cobb and 3" exhaust to a magnaflow thats when I gained a full second. So it's either the cobb accessport or the magnaflow. Alot of people say the magnaflow but in my opinion, before I put the cobb on it felt like it was running hard and strong and after the cobb it felt slower when I got on it. It just seems like when I redline in first and shift into second the rpms drop way to low and try to catch up.