55K views · 292 reactions | The Derringer for the 2017+ Duramax L5P is the only inline tuner that receives data from your OBD-II diagnostic port, allowing it to make safe, intelligent, real-time calculations. Add +61hp/112lb-ft to your GM diesel today! | Banks Power | Facebook

The Derringer is the most advanced inline tuner available for the 2017-2023 GM Duramax, 2011-2019 Ford 6.7L, 2014-22 RAM 3.0L, and 2020 Jeep Wrangler/Gladiator 3.0L diesel. Delivering a gain of up to 81 hp / 144 lb-ft, the Derringer is the only inline tuner that communicates with your truck's computer. Unlike other tuners, Derringer monitors every aspect of your engine and drivetrain in real-time and honors all factory safety systems. The warranty-friendly tuner is packed with features that will