Tuner for 2003 - 2007 Dodge Ram with 5.9L Cummins Diesel engine. This tuner is in great shape. Will allow you to change the motor, transmission and even tire sizes. It has economy setting, tow setting, performance setting and factory setting. It will read your vin and store the factory setting so you can return it to that setting if you wish. I have this listed locally so I reserve the right to end the auction early.