Originally Posted by HDThunder

From what I read I don't think this device is fooling the ECM into thinking your bike is cold. If it did that the bike would never go into closed loop and would be forced to run open loop all the time. Plus it's only changing the O2 sensor voltage and not impacting any other sensors. The O2 sensor is like a battery and generates it's own voltage in a narrow range of .2-.8 volts. The ECM takes this voltage and translates it through it's programming and VE tables to a target AFR in closed loop. I think it does nothing more than take whatever voltage the O2 sensor is sending and lowering it by a fixed amount. Lower voltage is leaner (in this case a false reading created by this add on device) so if the ECM sees lower voltage it will add more fuel to achieve it's target AFR. Therefore the ECM would be fooled into adding more fuel.

Here is a real good write-up explaining how a Lambda sensor actually works.

http://www.picoauto.com/applications/lambda-sensor.html

Originally Posted by bayoun1

I just installed the FL-Xoed-10 02 wide band sensor on my 2010 (stock) Limited and notised the RPMs seemed to be running higher in all gears. I now run about 3000 rpm at 80 mph and wondering how that compares to others?