Rockridge 4wd sells a variety of tuners and programmers for Jeeps, SUV's and Diesel truck applications. Tuners are nice because they can improve torque and horsepower along with correcting speedometer readings after installing different gears or larger tires.
Depending on the vehicle and manufacturer, features typically would include:
Multiple performance tunes included
Heavy load towing and fuel economy tunes included
Automatic transmission optimization
Electronic speedometer calibration for tire, axle gear, and transfer case gear changes
Read and clear diagnostic trouble codes
Real time idle up for running accessories such as welder, winch, and air pump
