Any help or advice would be hugely appreciated. Just over a week now purchased an A4 1.9 TDI Avant 130. Suspicion arose in a few days that the car seemed to have a remap on it. I contacted the owner who admitted he did have it done by some mobile mechanic a few years ago which he doesnât have the details for the person or in terms what was done exactly. Iâm a bit worried an the car seems to over boost an very sluggish in the lower rev range. Spins out of control as well. Is it possible to take this unknown map off?