Mark and others, here's a neat little digital gauge and a table that shows the relationship of sensor voltage to A/F ratio.
http://www.dynotunenitrous.com/store/scripts/prodView.asp?idproduct=129 John Martindale Family 29 Jane Circuit TOORMINA NSW 2452 AUSTRALIA ph: 61 2 66584767 email: johnja...@optusnet.com.au