Wide range A/F sensor and meter found on web

[AL8001 at aol.com]

I said:
>> For a home built wide range A/F meter. What if we used the wide range
>sensor (
>> NTK?  Honda ?)  and the ECM from the car?   Hopefully there is a
>> frequency/voltage that can be taped into.
>> 
Then frank said:
>Thought about that but pretty sure there is no output to tap.All control
>is done internally. Worth looking at tho.
>
>frank parker


I'm thinking of a signal at the board level that can be used.  Hopefully there
is a seperate chip(s) that controls the O2 sensor.

Do we have a year and model that uses a wide range sensor? I could start
looking for the parts.