Buell Owners: NightRider XiED

[Homeslice]

Originally Posted by Tmall

The ecm takes a reading and compensates the fuel. With the resistor, your ecm is still compensating, it's just thinking it's getting more air. So, it adds fuel. The benefit is, it continues to be dynamic and change injection rate due to altitude, temp, and load etc..

If you would remove the o2 sensor altogether, it would not be able to compensate.

In a nutshell, this device allows the bike to continue to compensate for various situations, but richens up the mixture at the same time.

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

[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.