O2 sensor idea

[Greg Hermann]

>Ok, so each O2 sensor varies greatly (even from the same
>manufacturer), so what about taking a wide ratio O2 sensor, and
>rigging a circuit in front of it to make the wide ratio look like a
>normal O2 sensor to the computer?   This would allow the computer to
>work correctly, and also mean that we would be able to properly (and
>reliably) use the O2 sensor for tuning?
>
>I would thing the circuit would probably need a pic with a D/A and a
>A/D and do a table lookup to properly make a wide ratio look like a
>normal O2 sensor.
>
> Thoughs/Ideas?

There may be a way to bias a wide band O2 sensor so that it crosses (just
as an EGO or HEGO sensor does at  any chosen A/F ratio other than stoich ,
in much the same manner as a HEGO or EGO sensor crosses at stoich. This
might be the best approach for "fooling " a stock ecu.

Regards, Greg
>
>
>			Roger