I just bought a narrow band AFR gauge that needs a 0-1v sensor.

Does my TC use a 0-1 or 0-5 sensor? If it is a 0-1, what wire on the ECM would I get the signal from?

A wideband gauge is out of my budget.

 

well sorry to say but you pretty much just waisted your money because that gauge will do you no good you need a wideband

 

its like 0-3.2 or 4 it is a wraf 02 and you cant use that gauge with it

 

I am aware of the wideband being more accurate than the narrowband. Thanks for the tip.

Back to the original question.

Since I can't use the existing O2 sensor (thanks for the helpful info bdyer), where would be the best place to mount an auxiliary O2 sensor that is compatible with the gauge? I would assume it needs to go BEFORE the catalytic convertor.

 

the s pipe will be a good spot near the downstream one