Ive just drove from England to Germany in my 2003 A4 3.0 v6 with a supercharger fitted. Sadly ive only owned the car a week so dont know much about them. Everything has been working fine until the last 20 miles of my 600 mile trip the engine mangement light came on and the car started to judder a little. Ive just taken the car to the local Audi dealer they stuck it on their com and say its the front cat converters and will cost around 2400 euro( I NEARLY THREW UP ) The mech in the car said to me maybe I should try his mate who tunes audi's bmw's and that for a living he would have a better idea becuase of the supercharger you have fitted and that may be causing the problem. So after finding this bloke He says the front cat converters melt and cause the engine manegement problems, He thinks that it needs them taking out and a stright pipe fitted and then a remap. He told me not to get new 1's fitted because they will just do the same again because of the supercharger. Ive tried looking for some info but not alot of luck. Should I trust the main Audi dealer? or go with the stright pipe idea i dont really know. Or maybe I should just risk it drive back to England and get my local dealer to look at it. Any ideas guys?