I have been able to log my LM-1 wideband through using the A/C pressure sensor and DataMaster. The problem I am having is the noise that shows up logging this way. The LM-1 shows a flat line reading (Say 14.5) and Datamaster shows the reading jumping back and forth like 13.8-15.2. So the signal output can only be averaged becuase of this noise. I have recalibrated the LM-1 to read from 0-5 volts from 10.0-AFR to 15.0-AFR to try and narrow the noise, but it didn't help that much. I have also tested this with the car shut off and I get the same noise!

Has anyone else seen this problem? Is there another sensor that I can use to log? Or could this be an issue with running the LM-1 using the Cigartte lighter? Anyone have any suggestions?

Thanks

 

Sorry, cant help your question, but how did you get the a/f to show in the a/c pressure reading in datamaster. Ive been searchin, but cant find a write up on how to do it.

Did you find a write up someplace?

 

Probably only experience this problem with the LM1 becasue of like you said Noise, this wideband seems to have a lot of, I would try a different type such as AEM etc.. LM1 is great, but has these weird spikes even when looking at it's own logs

 

I do have a writeup. PM me an e-mail address and I will shoot it to you. Hopefully you have more luck than I.