Hi all I have a question about O2 sensors.

I have seen O2 sensors where the up stream and down stream connections are the same.
What you happen if you mount an upstream sensor O2 sensor on the location of the downstream and the down stream O2 sensor on the Up stream location?
Would it make a difference?

 

You can interchange up and down streams no problem.

 

Cool thanks evo9 mike

 

This true on say a Evo IX MR? My down stream is bad, but i have a new upstream O2?