Wait for PRL to come out with an open element intake and then you’ll hear more or the turbo spool and wastegate noises. The stock setup has silencing equipment installed to keep those noises from being audible. With that said, I’ve owned 8 turbo cars and my wife has owned 3 turboed vehicles...only on one of those cars have I installed an HKS blowoff valve. The “whoosh” noise is cool for about two weeks and then you wish you had never installed it.