Black art!

Seriously, that Transtar and Cadi info is the best I have found & seen so far too.

These trans's are very simple. Mostly a set of solenoid controlled clutches (and one sprag/roller). 5 clutch control solenoids. One shift pressure solenoid. 2 actuator solenoids (TCC). A few pressure switches, a temperature sensor, selector position switches and input & output speed sensors. The complexity is in the controller and the way it works hand in hand with the engine control module to create smooth and timely shifts for all (most) situations.

HPT has just improved their depth with the A6's from shallow to very deep with a new and very needed release. Am sure the EFILive guys are working this very minute to go further into this trans controller and even deeper than their already class leading capability.

Now the aftermarket & tuners have a whole new field of data to play with so the knowledge level should go way up.