is my shaft bent? (oooh err) ;)

[rotta]

ok so in a high gear at really low revs turbo whistle isnt smooth but quite bitty like the shaft is bent in a turbo or somethings bent on the compressor or something, hard to explain, once the revs are up think it smooths out but cant be sure cos the cars so loud but theres no problem at all with boost or performance at all... any ideas??..

Tom.

[MilkybarKid]

like a kazoo being played by a bronchitis sufferer?

[Blue_Thunder]

Rattling heatshield?