It's going to be a simple change of either a shift speed point or torque converter clutch apply speed.
The reason I wanted to know the PCM code was due to how the shift strategy is with a stock PCM. Ford did a lot of things with their seemingly endless array of box codes and every HEX code Ford programmed had something changed (they considered them upgrades but that is questionable depending on who you ask).
Good luck! I'll point Bill towards your concern and when he has a second I'm sure he'll be happy to address it.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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