This Edge CTS3 is a must - have all - in - one ECM/TCM unlocking and tuning device for your 2017 - 2019 GMC/Chevrolet HD with a 6.6L Duramax engine. It comes with a well - known touch - screen monitor and a revolutionary locksmith device with an unlock cable. Not only does it save you time and money, but it also boosts your Duramax's performance, offering improved throttle response, quicker turbo spool - up, better fuel economy, and more user control. Part Number: 85400 - 262. Key features include in - vehicle ECM unlock, adding up to 150hp/350tq to the tires, and a monitor that displays important data. It can make your 1/4 - mile 1.3 seconds faster and gain 8mph. The Throttle Boost feature allows you to adjust pedal sensitivity. You can calibrate the speedometer for tire sizes 26 - 38', command manual DPF regeneration, and more. It has multiple power levels like Economy (75hp/150tq), Towing (100hp/200tq), Performance (125hp/250tq), and Extreme (150hp/350tq). The tuning has passed in - house emissions testing and is developed for clean, efficient DPF - friendly performance.

Using this Edge CTS3 is easy. First, make sure you have a PC and download the Update Agent software as you'll need them to complete the tune process. Connect the device to your vehicle as instructed. Once connected, you can start unlocking and tuning your vehicle's ECM/TCM. You can choose different power levels according to your driving needs, like economy for daily commuting or extreme for high - performance driving. There are some important notes. The device can only unlock and tune one vehicle. Once the ECM is unlocked and flashed, you can return the flash to factory settings, but the unlock process can't be reversed. If you've completed the VIN lock and ECM unlock, the device is non - returnable. For maintenance, keep the device clean and store it in a dry place. Make sure to update the software regularly to ensure the best performance.