Wideband O2 sensor\gauge choices

[chickn]

I would look for an option that allows you to log the A/F data if you want to tune all of the circuits in your carb. You can learn so much more when you plot the data. I think it may be possible to use a innovate motosports LC-2 cable and log directly to a laptop. (keeping the cost down). Have you ever looked at http://www.autosportlabs.com? They have a really nice data acquisition that is relatively cheap and open source.