Hello guys. Just happened 2 days ago my 2003 A4Q 1.8t is making a whining noise when accelerating, almost sounds like a friggin supercharger. I took it to a mechanic he said it's not the turbo. (I am boosting fine, no fluttering or loss of power.) He says wait for the sound to become more prominent and we will be able to pin point it better. The noise is driving me nuts. Anybody ever come across anything like this? Belt tensioner? Alternator pulley? Does the guy have no idea what he's talking about could it be the turbo about to blow? Any help/input is greatly appreciated. Thank you. -Joe