Just bought a new A 6 3.0 TDI Avant Le Mans and wondered about increasing the engine performance of this car- I have heard that electronic changes can give an extra 40 PS.
Is this worthwhile and is it a good idea to consider this on a brand new engine?
I know that Brabus prefer to fit performance enhancing chips etc. before the engine has done 8000 miles or so, rather than waiting for the engine to be fully run in.
Are there any "running-in" precautions or can I have fun from the start?