Air/Fuel Meter

[cobalt]

When installing an A/F Meter/Gauge, do you tap the signal wire to one of the O2 sensors on the headers/manifolds, or on the O2 sensor that is on the cat?

I was thinking that you'd want the "pure" exhaust signal from the header/manifold, as opposed to the "cleaned" signal at the exit end of the cat.

Thanks,

Andie

 

[SpeedDemon]

Originally posted by weiku:
When installing an A/F Meter/Gauge, do you tap the signal wire to one of the O2 sensors on the headers/manifolds, or on the O2 sensor that is on the cat?

I was thinking that you'd want the "pure" exhaust signal from the header/manifold, as opposed to the "cleaned" signal at the exit end of the cat.

Tap the primary O2 sensor, which is before the cat.

You can tap it right off the ECU wire harness, the wires are labeled in the NSX Service Manual.

Good luck,
Marc