Audi a3 2.0 140 bhp / i loose power when i hit over 3k rpm?

[sj469]

Basically when i change up through the gears theres like a weird whirling type noise that i can hear and when i hit over 3000 rpm the engine goes into a kind of limp mode and have no power untill i restart the engine and its back to normal? any ideas? 

[Nick40]

well the weird whirling noise you describe is your turbo,and the lack of power is your car going into limp mode which resets itself upon restarting, you need a code reader and I would guess its a turbo boost pressure problem