Power Commander Fuel Controller for 2003-2005 Yamaha YZF600 R6Power Commander Fuel Controller (PCFC) Product Introduction Inexpensive yet very precise way to control your fuel curve. The Power Commander FC is a new plug n play fuel management device pre programmed with Make Model specific maps. In addition the Power Commander FC has the added ability to modify or change these maps on the fly without a computer. Users can literally select between a Power Commander FC Map custom built maps or even fine tune low