Hear for yourself how GFB blow off valves sound!
Fully Recirculated
Standard Trumpet Atmosphere Drive-by
Standard Trumpet Drive-by
Standard Trumpet In-car
Fully Recirculated
Standard Trumpet Atmosphere Drive-by
Standard Trumpet Drive-by
Standard Trumpet In-car
Recirculated
Standard Trumpet Atmosphere Drive-by
Standard Trumpet Drive-by
Standard Trumpet In-car