Yes, increases in transmission pressure can be accomplished by tuning other tables, but only up to the pressure possible due to the lowest current in the force motor current table. So, altering the force motor tables can allow you to reach a higher maximum line pressure.
I posted to take the 3-4 shift to 0 and lower the time for the other gears.
The transmission tune still looks off, even without considering the torque calculation being off. Shifting 472 ft-lbs at 66% of full line pressure makes no sense. Just to compare, older PCM's for 300-350 ft-lb engines would pass that level at around 25% throttle at low speeds and 50-60% throttle at higher speeds.
At the dyno, they should be able to force the line pressure high so it won't slip and they can do the tuning. Then, either them or you can go back and do the transmission.
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