A power commander map is TPS position vs RPM. I am guessing the factory fuel map in all of these bikes is a V/E table which has rpm on one axis and manifold vacuum on the other axis. Both the power commanders and bazzaz units act as a band aid on the factory tune. In a perfect world it would be better to actually re write the V/E table in the bikes ecu. A given map should stay consistent. A map may need tweaking from time to time as the engine wears and engine management sensors begin to fail.