Buell Owners: NightRider XiED

[Tmall]

Originally Posted by Homeslice

so, while mine just returns the same value all the time, his actually uses what the O2 sensor is saying, but modifies the value?

Yes. Buells fuel injection is very lean from the factory. The resistor changes the value, causing the ecm to compensate and adds (arbitrary number) 2% to the fuel. The ecm works as normal, takes readings and changes fuel maps on the fly, it's just enriched by X% throughout the closed loop area by changing the signal from the o2 sensor.