Originally Posted by 2bmw2
MarkD has software that works great in the all the 540's, right from 1997 to 2003 . If any of you have a later 540 and were not happy, just contact him for a fix. What probably happened is that your car was flashed via the OBD-2 port instead of the round ADS connector. This connector is even in some 2000 540's.
What about dyno tune in accordance to the mods? AA used to offer remote dyno tuning, so does AutoLogic but I can't find anyone with AutoLogic in Toronto that will do the tune.