For sale is the ASR Component Exhaust Flap Controller that was installed on my 992 GTS prior to the installation of an Europipe exhaust. I imported this from Germany for around £600 and would accept £250 inc delivery. It's very easy to install and allows you to manually control the exhuast valves with a remote control key fob. It has two modes - Flaps permanently open and Controller disabled. It's a very easy way to improve the sound without affecting the warranty. Several videos can be found on the ASR website. The controller is compatible with the following models: