A bumper created using a resistive implant welding process. The output of a main transmitter responsive to a first bias current is connected to the output of a receiver through an internal resistor. The excess torque resulting from the extra airflow is offset by applying a negative torque on the driveshaft via an electric machine coupled to the engine or via alternate engine actuator adjustments. A second water separator is provided between the anode outlet unit and gas inlet lines to the first and second fuel cell stacks to increase removal of water droplets prior to a recirculation pump.