The Edge Evolution CTS3 is the most advanced flash tuner and digital monitor available for GM gas applications, delivering proven performance and control for Silverado, Sierra, Tahoe, Suburban, and Yukon models equipped with 5.3L, 6.0L, and 6.2L engines. Featuring the industry’s best 5-inch high-resolution touchscreen monitor, the CTS3 combines preloaded, emissions-compliant calibrations with a fully customizable display, giving you noticeable gains in horsepower, torque, and drivability for towing, fuel economy, daily driving, or performance.\nThe CTS3 goes far beyond basic tuning.