BMW M3 GTHAUS Meisterschaft GTC (EV controlled) Exhaust System Demonstrations.

Applicable to BMW E9X M3, GTHAUS Meisterschaft GTC (EV controlled) exhaust system demonstrations. Switching Exhaust operations back and forth from Closed (Silent) to Open (Performance) modes - control the exhaust gas flow / back pressure and Exhaust Sound as much / little as you want !! Enjoy the awesome F-1 sound and also your quiet OE stock sound with one smart exhaust system (Meisterschaft GTC exhaust system), any questions? please contact GTHAUS and its authorized dealers. Thank you for watching this v