Any one here install the RENNtech exhaust module?
It allows you to open the exhaust flaps up at will by using their remote.
I know I am a trader and traded my GLC for a
SLC however people on the SLC site don’t seem to do any mods on on their cars.

17 SLC 43

Isn't the exhaust flapper only on the AMG cars? Your car probably doesn't have factory controlled exhaust flappers installed.

R.K.

SLC43 is a AMG
flaps open fully only in sport plus mode

I installed mine last weekend. Pretty sure it’s even louder in race.