MTM exhaust scheme.

[kilian tuning]

Ive got a switch beneath my dash that i think is linked to my valves in the mtm exhaust.
I didnt have the time to follow the wires behind my dash to see where they are going...
Anyone able to tell me from the pic below (and understand a little german language) how it works or should work, because when i turn the switch (it has only 2 possibilities, like on or off) my brakelight comes up, so maybe its easier to tell why this happens with this pic in mind...(if related)
http://i1229.photobucket.com/albums/ee469/mavada1/schema_221.jpg

[JSRS6]

Do you notice a change in exhaust tone with the switch "switched"?

[DonS]

schalter = switch
relais Öffner = opener\breaker relay
drucksensor = pressure sensor (oil pressure on the dash of my 911).
magnetventil = magnet valve
behälter = tank, reservior, bin

Maybe this a pressure (turbo boost) sensing intercooler spray kit ala Aqua-mist...? Look for a reservior for the liquid. The magnet valves make sense to open\close flow, but I don't see a pump.

That's my WAG.

[JSRS6]

Looks like you hit that nail on the head :hihi: