Fuel and timing control, Rev Xtend and is a reduced size from the PCIII USB. Warm-up fuel adjustment (unit reads engine temp and allows fuel/timing adjustments based on the reading). The Power Commander III USB allows you to add extra fuel during start-up based on number of revolutions of the engine. Reads the exact engine temp through the bikes own ECM, allowing the tuner to choose how much fuel to add. More tuning ranges than PCIII USB. Enhanced accel pump utility. USB powered from computer. Software displays J1850 data from bikes stock ECU. Two-position map switching function. Can add any SPST switch and toggle between two different fuel/timing maps. Gear/speed input allows for map adjustment based on gear. Analog input allows user to install any 0-5 volt sensor. Build an adjustment table based on analog input such as boost or temperature. Power Commander V is capable of allowing each cylinder to be mapped individually and for each gear with the gear position input connected.