on July 7, 2011, 8:58 pm, in reply to "Re: VW / Golf 5 Diesel, Rough Idle / misfire"
A bit of a long shot but seeing there is no history with this car then maybe it has had injectors fitted & not setup correctly ?.
I would go with what Sean has mentioned (check valve timing .
Also on live data what boost is it running at?
HTH
John