The Banks 66793 Derringer is a powerful, plug-and-play performance device that can add up to 61 hp and 112 lb-ft to your 2017-2019 L5P Duramax. With six power levels that can be changed on-the-fly via the included iDash 1.8, you can dial in the perfect amount of power for any situation. The Derringer also features altitude compensation and simple plug-and-play installation, making it easy to use and remove for dealer service. Plus, with its interface with the OBD-II port, the Derringer can communicate with your vehicle's ECM for a truly custom performance experience. And because it doesn't require a reflash, it's warranty friendly. With the Banks 66793 Derringer, you can enjoy enhanced performance and peace of mind knowing your engine and powertrain are protected.