Get RV275 and EZ
For some extra power, RV275 and EZ are good towing combo.
Guages are a must. I running RV275 and supertuners power program, ez off the truck right now. the power program appears to have significanly higher exhaust temp on Performance tow (50HP) mode. MY wife followed me the other day and with heavy load, over ton, of gravel in the truck. She told me there was slight smoke when I was putting my foot down.
The power tuner has a code clearing function too.
JB