http://www.motec.com/mdc/mdcoverview/
Functionality
The MDC is used to adjust the torque split between the front and rear differentials to achieve greater control over handling characteristics such as traction, braking on loose surfaces, turn-in response, and understeer on both corner entry and exit.
The centre differential is essentially a limited slip differential with adjustable preload. The preload is proportional to the fluid pressure in the centre differential. The MDC works by regulating solenoid current, which in turn, controls the fluid pressure. When no pressure is applied (0% lock) the centre differential operates as an 'open diff'. With increasing fluid pressure (increasing percentage lock) the preload increases, requiring more torque difference between front and rear wheels before the centre differential will slip.
There are six selectable control modes: 0% lock, 100% lock and four user-configurable modes. These modes can be cycled through using the factory dash mounted ACD button.
MDC Manager Software
This Windows-based software is used to create, edit and send a configuration file to the MDC. The configuration file determines exactly how the MDC unit will operate.
The Mitsubishi Diff Controller can be configured with an acceleration table, a braking table and a desired slip table.