I have a '97 OBD2 car and would like to swap out one of the unused O2 sensors with a real WB sensor. This is just temporary so no sense in going to the bother of added another bung. Which of the four OBD2 sensors are not used for the OBD1 pcm?

Hal

 

The rear ones after the cats with the square connectors but if you still have cats those bungs won't help

 

that would be the after cat but a cat would make it read leaner i think. so thats no good sorry.

 

Oh, well thanks anyway. Guess it's a trip to the muffler shop for me.

Hal