mystery noise Polo Gti

[Chipped]

..ok car warmed up at idle, in the morning, drive off. Upon spritely acceleration around 2-4k rpm a noticeable raspy rattleing noise coming from engine bay, passed 4k rpm it settles. After say 20mins of driving this sound goes once car is warmer. It to me sounds related to air induction somewhere or
could this be the dreaded turbo bolts issue?
Had a look in engine bay no visual signs anythin loose.

thanks

[GoLfMan]

I know it sounds silly, but have you checked your oil lately mate?

[Chipped]

yeah only last weekend all ok but I'll check today.
I replace every 7000km

[jesum]

perhaps it could be related to this -> http://www.vwwatercooled.org.au/newf...se+turbo+bolts

??

[RhysQ]

perhaps it could be related to this -> http://www.vwwatercooled.org.au/newf...se+turbo+bolts

??

exactly what i was going to say...