Can someone please explain to me how these two systems differ, either in theory or in execution? The Subaru AWD on demand that comes with the 4EAT sounds as if it splits torque between front and rear starting from a stop, then slowly transfers torque until most of it is with the front wheels once the car gets to cruising speed. It then monitors the wheels and sends torque to those with traction if it detects that some wheels have less traction. Does this sound about right? The description of the iTM3e (from wikipedia) is as follows: "Multi-plate clutch coupling. The ITM 3e multi-plate clutch coupling is used in the Hyundai Santa Fe , Hyundai Tucson and Porsche 911. In normal conditions it send up to 95% of the torque to the front wheels. In the case of the Hyundais, the system can be locked in a 50:50 split so that you have a more dedicated off-road system. The system can be locked with the '4WD LOCK' button. The ITM 3e uses a multi-plate clutch coupling with magnetic activation" If anything this sounds better since with the push of a button you can lock in a 50:50 split. Can anyone tell me how subaru's system is different, or if it functions basically the same way and results in the same performance? Thanks in advance.