Excerpt from
http://www.myevo.com/E7_01.htm


"Under hard acceleration, the ACD reduces slippage and approaches a locked state, thereby transmitting more torque to the road surface for better traction and acceleration. When the driver makes rapid steering inputs, meanwhile, the ACD operates virtually as an open differential to improve steering response and feel through corners while retaining outstanding 4WD stability. The ACD also enables the driver to manually select one of three modes - Tarmac, Gravel, Snow Last but not least the ACD operates in a virtually open state when the parking brake is used, thereby enabling rapid and effective side brake turns."


This is so cool. Doing that would grenade my VC centre Impreza diff!

 

I'm sure you guys know about this already, I'm just giddy, that's all!