You've found it! At least 20 engineers were involved in designing the Fuel Stop Plate and Governor controls. The fuel stop plate controls the fuel quantity of the Bosch P1700 fuel pump that is the heart of the Cummins engine performance. The governor controls the engine response to load and the maximum engine RPM. BD offers 6 different ramp designs of the fuel stop plate that result in 30 to 150 HP and 70 to 300 ft/lbs of torque and a calibrated boost tube orifice improves your turbo performance.