I am running air bags in rear of my Flex, to keep front down. Rear clutches in AWD system only can handle about 150 lbs torque, so extra goes forward. We need more front traction with the car -AWD system.
In my 2010 with T/C button OFF, the system shuts down if my fronts spin too much faster than the rears, which hook up first. So... I'm not sure just what type of rear shock would help us.