UEGO, the universal Exhaust Gas Oxygen sensor

[BigBrother at mail.utexas.edu]

Does anybody know if Ford's project to develop an EGO with
proportional air/fuel ratio voltage output was ever completed?
It would be nice to have one of those sensors to simplify the
calibration of an efi system.  I remeber Jon Lusky mentioned
something like this existed, but it cost hundreds of bucks and
only lasted 100 hours or so.