wideband o2 location

[steve40]

i'm having to add cats to my exhaust, pretty much the only location where i can put them in the car that is close to the headers would force me to relocate my bung for a wideband o2 sensor.

my question was how close can the o2 sensor be placed to the regular o2 sensor?

[andrewb70]

....

my question was how close can the o2 sensor be placed to the regular o2 sensor?

As close as space allows. One has no effect on the other.

Andrew