I have designed controllers for various Active Differential systems and specifically for Nissan R34/35 which is very similar to ACD.
Check this link:

http://www.full-race.com/store/r14-a...ne-gt-r-1.html

I would like to make it work for Mitsubishi ACD as they are very similar.
The difference between my controller with the ones in the market for Mitsubishi is that it has an independent G-Sensor and continuously calculates the amount of lock ratio to achieve best traction based on X/Y forces and Throttle so no need to change settings or program various maps. It also has a tuning port so that you can change the parameters to fine tune it using a PC or laptop.
I would like to work with someone who has a known track record on the race track, good understanding of the drive train control and also the electrical/signal wiring that is willing to run tests to find the best setting. I would not be able to provide any monetary compensation but the beta unit will be yours and of course you will have the bragging right to be the first to test and fine tune the controller and life time support for your controller and free new versions as they are released.
Send me an email to hoomand1 AT yahoo.ca if you are interested.