I'm gonna start off saying this is my first turbo car and I'm not to familiar with them. The problem I'm having is at 3500 RPM I get this loud air rushing sound that started today and it haopens way after I hear the turbo whistle. Now on my car I have the boomba bov adapter, throttle body spacer and the symposer delete. Could one of these items cause it? The air noise is a lot louder than the normal turbo noise I've been hearing so I'm curious to know if there is something wrong or if it's normal with these mods. Please let me know! Thanks!