Welcome Wayne T , sadly this situation is happening across the UK and no doubt elsewhere in Europe. It also appears to be a lottery with some Audi's being successfully updated and others like yourself not so , it maybe worth mentioning that the 1.6 tdi seems more prone than the 2.0 tdi to problems judging by the feedback in the club. And like yourself in also had the wool pulled over my eyes too thinking it was the right action for the great of good ! .A remap to stage 1 seems the answer to correct this debacle being the general thoughts of most. Good luck with your quest and keep us posted buddy.