Ive got a 02 1.7dti with a 100bhp map in her and 64,000 on the clock. Recently, the turbos started making a metallicy noise when she comes on boost from 2nd gear on under normal driving. If i rag it, she whistles and sounds a bit like a slipping belt. Ive taken all the hoses off the turbo and from what i can see theres no oil being lost and the turbine itself seems 100% with no damaged fins or play.
She drives the best and isnt down on power or smoking but the sound is kinda worrying.
if anyone can shed some light on whats happening it would be much appreciated!! cheers