The ACD does not control the power split as it is set ratio. It controls the amount of slippage between the the front and back. But anyhow, IMO I wouldn't use the ACD T/C unless you wire it all up. You might get some funky handling but Imagine 5K miles later and the T/C decides to seize going 90 on the express way because it needed the ECU after all for some unknown reason. I wouldn't want to be that guinea pig.

 

I have had one in my 03 for 7500 mile with no problem.The unit is full of acd fluid with the line holes capped. I check the level once a year.I never had to add any fluid and works great.