The Zero/Sports Turbine Venturi Uppipe is designed with the specifications of 60φ-50φ-60φ. The gases from the exhaust manifold enter the uppipe with a 60φ diameter, then narrows to a 50φ diameter in the center of the pipe to help speed the flow of the gases before it increases back to a 60φ diameter and exits the upipe to reach the Turbo. This design allows for quicker spooling of the Turbo and thus results in better response in all driving conditions.