10/25/2026
More power. Sharper throttle response. Better fuel economy. Stronger towing performance.
The Evolution CTS4 delivers the industry’s best value in diesel tuning and monitoring, all in one device.
1994–2022 Ford Power Stroke
2001–2023 GM Duramax
2003–2012 Ram Cummins
Built for your truck today and your plans for tomorrow. Now preloaded with a custom tune license, Evolution CTS4 gives you a path to custom tuning when it’s time to upgrade your turbo or injectors.
Next-generation intelligence. Proven diesel performance. Take Control.
*Custom tunes sold separately. Features and support vary by application.