http://www.dinancars.com/products/?s...5-e71&mid=1146
45min ECU/TCU software upgrade and you have a different car.
I bought a 2011 X6 35i and shared the same disappointment that you describe.
The second that I touched the accelerator after the re-programing....I was in love!
Throttle response, shift patterns....all significantly improved...
The best part was...you get the same gas mileage...because when the car is not in sport or your foot isn't in it...you get inline six, 8 speed tranny fuel efficiency.
$1,300 plus installation is the downside...but it is undetectable by BMW service techs.
A lot cheaper than a new car!
