1. A method for avoiding surge in a vehicular fuel cell system compressor, said method comprising: maintaining, within a memory, a compressor map corresponding to the operation of the compressor; controlling the compressor using a default strategy such that its operation approaches a setpoint within the compressor map; sensing a surge condition within the compressor; determining if an operating speed of the compressor is at or above a threshold value or below the threshold value; controlling the surge condition with a first surge mitigation strategy if the operating speed of the compressor is at or above the threshold value or a second surge mitigation strategy if the operating speed of the compressor is below the threshold value; regulating a cathode backpressure valve with the first surge mitigation strategy; and regulating a recirculation valve with the second mitigation strategy.