Allows you to toggle between the two maps in the Power Commander unit.
For most Taco Moto Co. Power Commanders map 1 is the corrected fuel map that will allow you to run the bike with an open exhaust and intake.
With the map switch you can toggle between that map and map 2 which is the economy map allowing for up to 10% better fuel mileage.
With no map switch installed the Power Commander runs in map 1.