Engine stuff....
Very little.
You're right about transmission shifting and torque converter clutch strategies.
There are those that really suck and make no sense, there are others that work OK but you can't fix them to be perfect, and then there are the ones that really work well.
The list of automatic PCMs I have driven:
MRT2 (super suck)
NVK2 (sucks)
NVK4 (not bad)
MNM0 (NVK2 wanna-be)
MNM1 (not bad)
PMT1 (awesome)
PMT2 (not bad)
PMT3 (not bad either but didn't notice a difference from PMT2)
VDH2 (suck)
VDH5 (super suck)
TDE0 (ok)
TDE1 (better)
NAW4 (absolute crap)
LKM6 (TDE1 wanna be)
YBT1 (garbage)
XLE4 (sucks)
XLE8 (not as bad as 4 but still sucks)
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Tuning, flashing, burning chips, and repairing all aspects of 7.3L Powerstrokes.
SEVEN 7.3L-powered vehicles in the driveway. Two didn't come that way from the factory!
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