His was the new airbox allowing you to hear what is normal. Yours is probably the same thing, but without more info we can't tell. Turbo's make noise. The freer the intake is, the more you can hear it.hope you respond. It sounds like I have the same issue. Did yours turn out to be the intake after all? Or did it turn out to be something else. I put on a whole new turbo and that damn sound still happens.