Tested an L322 earlier and when acccelerating then backing off the pedal, there was a quick 'whistle', Im guessing from the turbo (its TD6) is this normal?
I know from my mis-spent youth driving petrol turbo charged cars tuned ones would whistle as the pressure built up, then was 'dumped' once you backed off the accelerator, never had a turbo diesel before so was wondering if its normal
