Exactly what are you suggesting? The idea intrigued me - so I followed the link to the web site. They offer interesting permanent installation fuel injection controls, but nothing in the way of a temporary instrument you could check mechanical carbs with - at least that I could find.
I wouldn't be installing O2 sensors in my exhaust just to check my carb's operation.
50 years from now - how are we going to restore a "classic" microprocessor based modern car?? Alfas - 1980 Spider, 1987 Milano, 1976 Spider