Kits include 2 Wide Band O2 sensors and 1 control box It will plug directly into the PCV and allow automatic fuel adjustments Auto Tune can make a map for each gear and it can map each cylinder separately for each gear if needed Basic settings would make one map for all gears " Warm Up" fuel adjustment (unit reads engine temp and allows fuel/timing adjustments based on it) Each map cell is individually adjustable so you can specify an exact air/fuel ratio value for each area if needed This allows the tuner/user to select specific AFR targets for idle, cruise, and large throttle opening areas By doing this you can automatically tune the cruise area for best fuel economy while at the same time achieve maximum power at wide open throttle This allows the Power Commander V to be used as a closed loop system If Dynojet does not have the exact map for your combination of parts you simply need to choose the closest one and let the Auto Tune kit do the rest