Enhance the performance on your 2020-2023 Chevy/GMC 6.6L L5P Duramax with Dash Mounted Tuners. Most Dash Mounted Tuners come with pre-loaded tunes that are adjustable for different driving situations. Pre-programmed tunes are specially engineered so you can instantly improve the performance of your vehicle. Dash Mounted Tuners install easily using the OBDII port on your vehicle. Manufacturers such as Edge Products, Banks Power, Superchips, and others produce Dash Mounted Tuners that are available at XDP.