Your X7 rolling palace deserves a power, torque and response upgrade from Autoupgrades.
Simply select your X7 from the drop-down box to find out how much power and torque can be gained on your X7.
If you have a ZF Automatic transmission in your X7 we are able to tune it so that gear changes become smooth and super-fast in order that a lot less power is lost through the shift, this not only improves acceleration but also minimizes the bobbing and destabilization of the vehicle through the shift.