LOL.
i was puzzled by that for weeks when i first got my Boxster.
who wouldn't like a switch that can make the engine sound louder?
well you need to have the PSE installed in your car, to be able to control the valve.
Boxster Sport Exhaust, up to 7/02:Porsche Parts & Porsche Accessories - Wholesale Porsche Parts & Tequipment - Cayman Panamera Cayenn
this is the cheapest place i found for it (usually goes for 3K+)
here is a pictuer when it is out of the car:
im thinking of making one myself. already got the valves off a BMW muflers and all the other parts. just need to find the time
