This upgrades the Hondata FK8 Fuel System to the Fuel System Plus. The Hondata camshaft delivers 25% more fuel volume when teamed with the Hondata FK8 fuel system. This is done with a redesigned Direct Injection camshaft lobe. This camshaft is only designed to work with the Hondata fuel system DI pump. Use with other direct injection fuel pumps may damage the camshaft, the pump and engine.