Thank you for viewing. This is a valve controller for Porsche. I intended to install it, but I am selling it as I will not be installing it. I am selling it for less than the purchase price. Details are as follows: ● Newly designed to not damage the original wiring! Easy to revert to the original, so you don't have to worry about damaging your car. ● Warning light error countermeasures are included, so the warning light will not illuminate. ● With memory function, you can remember the valve state when the engine is turned off! The valve will be in the previous state when the engine is started. Example 1: Valve closed → Engine off → Engine on → Valve closed Example 2: Valve open → Engine off → Engine on → Valve open [Product Contents] ・Control unit ・Remote control (2) ・Harness set ・Other small parts set [Product Description] This is a control unit that allows you to switch the sound of the genuine variable valve muffler at will. Normally, the sound remains quiet unless you enter sports mode. The valves are closed when parked or in neutral, and there is no impact. etc. By installing this unit, you can open and close the valves at will. Compatible models 911 991 997 987 718 981 986 957 958 911 (996) 911 (996) 911 (997) 911 (997) 911 (991) 911 (991) Cayenne Cayman Boxster Panamera *It can be installed on other vehicles if they have a negative pressure variable valve.