I have a 2001 Excursion with the 7.3 Powerstroke and an older (2002) Superchips microtuner, but I can’t get near the 450 hp mark. But then again, with 212K miles on her, I don’t want to kill the transmission :)
Smoke em if ya got em....
The Alison has no problem what so ever of dropping that HP to the ground.