When i got my car back from Audi last time following a new cam chain and ecu flash update the thing ran like a Swiss watch. Now after 500 miles its settled back to its old ways. Dont get me wrong..its fine , no codes and runs ok but petrol consumption has dropped off and the exhaust is sooty again. Its throbby at tick over and its just lost that edge. In short its reverted back to Std Audi.....lol. Having seen how it can be before the ECU learns how to be lethargic again i am wondering if a custom remap might help ie weaken it off through out the rev range. I have seen a few write ups from R32 owners who have improved throttle response and taken away the asthmatic attacks at 5000rpm plus , Anyone here had a custom map ???