I am trying to determine the factory fuel pressure for my fuel injected 99' SS 900 (I can see the injectors with the panels off). When I disabled the fuel pump, blocked the return and "T'ed" into the system with a regulated fuel injector cleaner system I noticed the bike would not start under 50 psi. Does anyone know what the fuel system pressure should be. Also is there a way to check why the red light is on? When i bought it I was told it was due to the aftermarket Power Commander controller.