The EDGE Evolution CTS3 (85400-200) is a high-performance tuner for 2001–2016 GM Duramax diesel engines (LB7, LLY, LBZ, LMM, LML). It features a 5-inch touchscreen, real-time engine monitoring, preloaded tunes for towing, daily driving, and performance, plus custom tuning options. It also offers diagnostic code reading/clearing, performance testing, customizable gauges, and compatibility with Edge accessories. Easy to install via the OBD-II port, it enhances power, throttle response, fuel efficiency, and overall truck reliability.