Turbo Whine

[Crash]

I need some help. I just noticed that on my 2006 A3 2.0T i'm getting a whirling sound. I'm guessing it's from my turbo because when i step on the gas it whirls steadily but when i press the clutch the noise is gone. the sound is in front of my passenger seat. is my conclusion right? i'm sitting at about 91K for mileage. i thought turbos goes at about 100K. Any thoughts?

[robbie_boy]

does it sound something like this?

YouTube - Audi S4 B5 "Dentist Drill" blown turbo

if so... its done

[kbonarek]

Does it make the sound at idle? If it does and goes away when you press the clutch, it could be the clutch throw-out bearing.

[Crash]

no it doesn't sound like a dentist drill, more like a pulse that speeds up when i touch the accelerator.

it doesn't make the sound either at idle.

Any other ideas?