This allows you to control your exhaust flaps by double tapping the ESC button on your dash. You can have the valves open or as OEM in any drive mode.
For more information see here:
https://www.active-sound.eu/en/audi/audi-a5/audi-a5-f5/active-valve-control
Comes complete with fitting instructions
£300
For more information see here:
https://www.active-sound.eu/en/audi/audi-a5/audi-a5-f5/active-valve-control
Comes complete with fitting instructions
£300