Is the 2003 350z Oxygen Sensor considered a Narrow Band or a Wide Band
Sensor?

Stupid question I know but I have some one who wants to know for an experiment. dont ask me why.....

 

Narrow band.

04.5+ on wide band I believe.

 

A wide band 02 sensor is included with this single channel wide band AFR gauge. TurboXS also sells wideband 02 sensors.
http://www.aempower.com/ViewCategory.aspx?CategoryID=67

 

If you have 04.5+ you can use Cipher (from AAM) to monitor your factory widebands.

03-04 is narrowband

 

I'm planning to hook up a digital afr gauge to my wideband. Which wire is the recommended wire to splice it to? I don't want to go through the ECU, too tightly wrapped there and the wires are bit too thin (afraid of messing up more than one wire).

Any suggestions?

To OP, sorry for small thread jack.

 

You cannot use an aftermarket AFR gauge to read the factory widebands.

They are not linear and they are not 0-5V like most aftermarket widebands.

That's why I mentioned Cipher...

If you get aftermarket widebands, most of them come with gauges anyway

 

So a an aftermarket guage that says for narrow band only will not work?
thanks

 

what "04.5+" means?

half of the year (June) or month number 5 (May) ?