Hav a '05 gti, you all know the sound of the turbo components when the car is building pressure and when you clutch it around 3k rpm the wastegate releases its pressure (wooush) sound, my one is suddenly very loud wooush when building up pressure and hardly any release (clutch) sound, any body have this issue before?? I got a software upgrade about 2 weeks ago but this thing only came on 2 days ago, overnight ... cheers for any advice..