You've heard it over and over, you can't tune the 2013-2016 Dodge Ram Diesel without sending your vehicle computer out to a tuning company. Things have changed!! Introducing the new PCM Unlock Cable by BullyDog for 2013-2014 Dodge Ram 6.7 Diesel trucks. With this revolutionary cable, you'll be able to use a BullyDog GT Diesel Tuner (sold separately) to tune your Dodge truck. It really is that simple! The part number for this BullyDog ECU Unlock Cable is 42214. You will need a BullyDog GT Diesel Tuner to go along with this cable (sold separately)