The Dinan Single Exhaust Valve Remote lets you override the factory exhaust valve operation and fully open (or close) the valve at the press of a button. Directly compatible with 'F' and 'G' chassis BMW's using a single electronic valve as well as 3rd generation MINI's, the Dinan Exhaust Valve Remote Kit is robust in its potential applications. Once installed simply press the top button of the supplied wireless remote to open the valve fully and enjoy maximum aural pleasure. Alternatively, when the need arises for the exhaust to be as quiet as possible, press the bottom button on the remote and the valve will close. This system works with both the factory exhaust and any aftermarket system that utilizes the factory electronic exhaust valve actuator. Tested and compatible valve actuators include BMW P/N's 18307851568, 18308686640, 18308632154 and 18308623424.