A bit off topic: The clip on the side of the oil sump that holds the pipe from the turbo to the intercooler is a poor design. Every A2 TDI I have seen this clip has failed. Resultant movement of the said pipe rubbing against the failed plastic clip can wear a hole in the aluminium pipe and leak boost. I didn't think plastic would wear away aluminium but I can promise you it can.
Appreciate the advise - certainly noticed it when poking around, though mine is held up by zip ties now - the bracket seems long gone but pipe is still sound. Need to get around to checking intercooler as i am quite sure i am loosing boost somewhere on mine and pretty sure it is intercooler - just really don't want to take the bumper off