Hi, i was just wondering what sort of mpg is right for a 3.0i e53, around town. And what mpg to expect on the motorway. Any way to increase mpg?? I have heard of remapping the ecu but i don't know if thats the way to go. Also any of you out there with k&n filters fitted to their x5's, do you really notice that much of a difference?? thanks for your time