So I put 100 miles or so on with the new MAG SC update. My driving experience is identical to Bo9roadking's. What we need is to remap our shift points and alter torque management settings. That said, i have now spent a good 20 hours or so reading everything I can get my hands on about the history, evolution and adaptation of the NAG-1, W5A580, MB 722.6 (all the same) trans that we have. Good news is we have a world class five speed auto! Bad news is it was designed by Mercedes Benz so it's controlled by a TCU from Siemens VDO in Germany. Siemens locks their code up tighter than gold in Fort Knox!
Our transmissions can handle our application no problem. Same gear box appears in Porsche tiptronic brand behind high horsepower/torque engines. Same gearbox is behind some of AMG's most powerful Benz engines. Same goes for Mopar. NAG-1 is right now on the strip running 9 second quarter miles in Challengers.
So far the only reasonably priced solution I can find is a stand-alone trans controller from Powertrain Control Systems (PCS). I do not, however, know if the ECU/TCU combo that make up the Chrysler PCM (powertrain control module) can live with a stand alone unit in the mix. So research continues on how to reprogram the truck to believe its got a manual or to accept the data inputs from someone else's TCU. One nice potentially outstanding feature of the PCS unit is that it will hold two calibrations. For racers it's street/strip. For us it could easily be street/off road. I'll be calling them tomorrow.
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