I wonder if anyone can offer some advise?
Ive just bought a 2006 rs4 with full non res decat Miltek pipe, Gruppe M induction and a DMS remap. However, the engine management light is on. The previous owner said it came on shortly after the decat pipes and when he spoke to DMS, they said there is nothing you can do. The engine management is telling you there is a problem with the cats.......it hasnt got any!!!!
Is there anything you can do to get the light off? Would it be worth refitting the original cats? I think it was only done for the noise anyway and I dont suppose it will sound/perform much worse with the cats back on.
Can you experts help a poor Audi novice out please?