All sorted. A vac pipe on top of the turbo had a split and another had come off. All back on and running fine now. Now over to my 330d. Time to sort that out.
I have a A4 avant tdi. Last few days it had started to give me problems with the boost. Sometimes the boost wouldn't come in till 2000 rpm or later and other time it would be fine.
Changed the air filter last night as it needed doing. And now the boost doesn't come in till 3000rpm but also I'm...
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