Forza Alfa Romeo Guilia QV / Stelvio QV Electronic Valve Controller Kit Electrical 6 kg from the rear

6 kg from the rear of the vehicle

increasing efficiency

throatier tone from your 991 Carrera's flat six with a substantial increase in volume

And that's without a tune

Fits all Porsche 991 GT3 3

Forza Alfa Romeo Guilia QV / Stelvio QV Electronic Valve Controller Kit Electrical 6 kg from the rearThe 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