tow mode is for your transmission shift point, converter lock up,and grade braking parameters.Highly recommended to use while towing.

still would like answer to my question please???

Whats better to tow in? 40hp or 65 hp tune? or can I safely pull in higher tune being my trans has been built up already? I pull a 10k lb toybox tag.
Its on a FE9 truck as well.I have boost and pyro gauges and also running a boost stick to compliment tuner.

Predator 2.02 on my 05 LLY. What is max boost set at for each tune.Particularly 120hp and 65hp tunes.