Thanx duallydave i switched my tuner to tow for the time being. Would i be able to run extreme mode more if i got a performance transmission or a valve body?

How hard is extreme mode on your transmission?

do you have a link that will point me in the right direction. im running a 2003 5.9l 4x4 with 35" tires and 6" lift with k&n air intake since i got the predator should upgrade my stock exhaust i usually run in performance mode.

Does anyone know if there will be and update for the u7130 predator model that will allow me to change my tire size?