Milltek Sport | Active Valve Controller | Honda Civic Type R | FL5 2.0T K20C1 | 2023+The Milltek Sport Active Valve Controller provides full control over the exhaust valve in both the OEM exhaust system and the Milltek Sport exhaust system. Without the Active Valve Controller, the position of the valve and therefore the tone of your exhaust is controlled through the FL5 Type R's built in modes. This product removes this restriction, allowing you to open or close the valve in whatever mode you like, whenever you like. COMPATIBLE