Darktrace Design G8X Valve Controller - Plug and PlayThe Darktrace Design Valve Controller is a must have for dialing in your ideal exhaust sound. Built for durability and improved performance, this plug and play unit ensures a seamless installation experience. With HomeLink integration, you can easily control the valves opening and closing, as well as switch to Auto mode for load based operation. KEY FEATURES Retains previous settings (Memory Function) Includes two remote controls Compatible with