E60714

Saw the AA BOV upgrade and heard YouTube clips of it. I want my car to have a more deliberate hissing when the BOV goes off, but I wasn't sure if what I was hearing was someone running the car at a higher boost or if the car can be running at stock boost and still get a somewhat more aggressive blow off hiss. It's a big expensive, and the cash I finally have now to spend is more for a filter and probably scoops and that's it. I'm almost sure having those two allowing more air in will still not have that much of a profound effect whether my BOV is an AA or a stock one.

Tell me if I'm wrong.