Hi mark. Ive read here and there about the chip and some owners of autos are not inclined to chip for various reasons. Ive got a 540i and like the power already there and i am curious about the differance the chip will make. I would welcome your input as i am hungry for a bit more from the old girl. i do a lot of freeway miles usually at 130km/h for about an hour each day with some shithouse stop/start city driving in between.