literally that has three positions which lets you select which EPROM the ECU reads from. The race program will have the timing interally advanced in the ignition timing map so you dont have to screw with the CAS. The pump gas program has less advanced timing than the race program. This is the purpose of the selectable programming so you dont have to play tricks with your CAS or fuel delivery. Its built into the different programs automatically. The valet program would simply be the regular pump gas program, but with the rev and speed limiter set differently.