Hi I'm ready to be shot down in flames for asking such a stupid question, but here goes. I've not long fitted the HKS BOV and the Blitz sus filter. My question is when I give the car some stick and I'm on turbo should I be getting a whoosing sound, it's not the same as the bov dumping air , but it's there never the less. I always thought an induction roar was more of a well a roar. This sounds like the charge escaping out of the bov. The bov still works correctly when you throttle off, could the bov need adjusting?