Forza Audi R8 Electronic Valve Controller Kit Suspension Fabspeed discovered that Mercedes Benz

Fabspeed discovered that Mercedes Benz instructs and REQUIRES that the transmission must be entirely removed to remove the primary and secondary catalytic converters

Drivability does not suffer in the slightest: throttle response is now sharp and smooth

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Fits all BMW F90 M5

and as such

Forza Audi R8 Electronic Valve Controller Kit Suspension Fabspeed discovered that Mercedes BenzThe Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the exhaust valve vacuum solenoids. The user can manually open the exhaust bypass valves to have that classic engine sound at all speeds and engine RPMs. Of course, you can return the operation of the