I don't know if it's the same for Z32's or not, but I've been reading up on how to install the signal wire on a Z31, and half the places tell me to go to the O2 sensor, and the other half say a specific pin on the ECU. I'm guessing the O2 sensor would be a more realistic reading of the AFR, but I'm unsure whether it would make much of a difference. Also, how can you tell if your gauge is wideband or narrowband? Thanks for the help, Jake.
Hold up, never mind. Worked out that the wire running from the O2 sensor goes directly to pin 24 on the ECU anyway. When I found out I was like...
And not a whole lot of point using a narrowband O2 gauge. I can recommend the AEM UEGO wideband though, works really well.
Yea, for finite AFR readings, useless. But they still give an indication of whats going on. I think of it as just a 3 level gauge, Rich, Normal, Lean. Putting my foot into it, needle snaps to 'Rich'. Feathering throttle while cruising and the needle bounces around in the "Optimal" area. Backing off the throttle sees the needle dip to 'Lean' for a while. It did come in handy years ago when I noticed very bad power loss during pulls... right after I turned the boost up on a pretty much entirely stock system. Needle was snapping to Lean . Ended up getting her tuned, and all was well again . ...I was young and stupid back then . MoulaZX
Doesn't answer my question as well as I'd hoped, but I worked out my N/A car has no O2 sensor. When I found this out I was like... Wired it up anyway to see how it would look. How can I tell if it's narrowband or wideband?
