03-24-2019, 01:53 AM
That is a good question and I don’t have enough knowledge of emissions work on motorcycles to give a comprehensive answer. The O2 sensor only directs the fuel injector pulse width when the car or bike is running in closed loop operation. I have been told on motorcycles that they operate in closed loop for a small percentage of time in comparison to automobiles, which is more my background.
Just to add more background and indicate why custom fuel maps are designed is that maximum power is achieved at richer ratios than stochiometric or 14.7 to 1. When custom fuel maps are uploaded the O2 sensor must be disabled or the computer will try and adjust the fuel ratio back to stochiometric in essence disabling the custom fuel map.
Just to add more background and indicate why custom fuel maps are designed is that maximum power is achieved at richer ratios than stochiometric or 14.7 to 1. When custom fuel maps are uploaded the O2 sensor must be disabled or the computer will try and adjust the fuel ratio back to stochiometric in essence disabling the custom fuel map.