NB: O2 narrow/ wide-band swap.Simple or Geek?

[Prof]

NB 2003 1.8 131K miles--Wanting to upgrade little things and thought of swapping in a wide-band O2 for the narrow-band at the MANIFOLD. Will this change register fine with the OBD-II (nothing else to do; plug-n-play) OR do I need to tell the ECU to read the new signal?
Thanks, (and MERRY CHRISTMAS)
Paul

[johnwag]

There's a few problems with what you're trying to do. My answers are based upon the assumption you're using a factory ECU since you say OBD 2.
The factory ECU is designed to run a narrow band. If it was programmed to run a wide band, it would have came with one.
Factory narrowbands are 4 wire. Most widebands are 5-6 wires.
How would you tell the ECU to read the signal? still assuming that you have an OEM ecu.

[OZMDD]

Why do you want a wide-band?

[fwMiata]

you have to swap in a innovate LC1 or the like that has a processor that will convert the signal, then tap that signal into the ECU. it WILL throw o2 heater circuit faults and most likely a primary O2 sensor fault as well, but should run normally. Myabe better depending on how the ecu reads the modified signal.

[SirHustlerEsq]

An o2 sensor in the manifold will also overheat.

[fwMiata]

brg, where are the sensors in a VW? the wb02 i have is a oem vw part IIRC. i thought it was in the manifold on those too.

[SirHustlerEsq]

brg, where are the sensors in a VW? the wb02 i have is a oem vw part IIRC. i thought it was in the manifold on those too.

In the manifold. That doesn't mean it won't overheat in your Miata. Don't think for a moment that VW is capable of doing much of anything successfully.

[Prof]

Thanks all.
Decision made.
Thanks for the discussion.
Paul