eflyguy
Well-known member
.. which means, for the same load - maintaining the same speed - you need more throttle to compensate for the drop in power - right?The ECU continuously adjusts the fuel injection trim to maintain a 14.7:1 air/fuel ratio (stoichiometric ratio) in a warmed up engine. As the motorcycle gains altitude air pressure drops resulting in less oxygen being available, so the ECU reduces the fuel trim to maintain the 14.7:1 ratio. Fuel is conserved (mileage goes up) due to the reduction in fuel trim but there is a corresponding drop in engine power.