As the title says. I am trying to figure out if my O2's are working correctly. How can I tell while using datamaster, or would I have to use something else. I was looking at the desired afr, it stays pretty consistent at 14.5, rarely does it dip below that. Any help would be greatly appreciated.
Thanks

The o2 sensors have an output voltage that corresponds to the AFR - I think the reading depends on whether you have wide or narrow band sensors.

Here is a nice link: http://www.ibmwr.org/ktech/O2-sensor-testing.shtml

I think you have to test them installed, with the motor running.

I appreciate the response I skimmed through it real quick. So what I am getting out of that is I can't tell by using the datamaster program.

HD stock O2 sensors are narrow band

I appreciate the responses, but is there a way to tell if it is working other than just replacing them. I have mastertuner, with datamaster, and vtune. I don't know much about them, I was just trying to find out if the desired afr is the reading after the o2's or is that what the map is trying to run it at.

I found while tooling around with the datamaster when recording a vtune file you can watch the front and rear o2 flickering meaning they are working. At least thats the way I read it.
Anyone have any experience with that.

o2 sensors pretty much work very simillarly to each other, you can use a digital vohm meter and measure output voltage whilst holding the engine at about 2000rpm and watching the voltage cycle between 100 and 900 millivolts, bout 6 cross counts per sec is good. well this is how i check them on cars which is not much different on a bike.