How Do I Install Afr Gauge On R33

[03osh]

i've looked everywhere and have no idea... i have a three wire oxygen sensor... where do i hook my sensor wire too?? cheers guys

[r33cruiser]

I forget exactly which wire i hooked mine thru, i think it was white.

Just hook up the + and G to the gauge, and run a piece of wire to the o2 sensor, strip a tiny bit off and test them all.

Easier way is to download a ECU pinout, and hook it up to the O2 sensor wire.

Took me 5min.

[mad082]

the easiest way to check is with a multimeter. if you can wedge it into the plug where the wires go in while the car is running (from memory) you should see that 1 gives a 12v reading, 1 is an earth (so no reading) and the other fluctuates. that is the one you want to tap into.

i should just add, that if you think that the gauge is going to tell you your actual air/fuel ratios accurately, it won't. basically it will tell you if your o2 sensor is working properly, but other than that it will be of no use to working out if you car is running lean or rich at full throttle as it will say rich whether your AFRs are 10: or 12:1. they are designed to work with a narrow band o2 sensor (which is what the stock one is) and won't work the same as a wideband. that said i have one in my car because i like flashy lights, lol

[Birds]

Wideband ftw

[Astro Bear]

What's the point of an AFR gauge?

I'm not trying to be smart, just genuinely interested.

Thanks.

[jdmtom]

Is it a wideband or one of those ghetto ones that you hook upto the original o2 cause if it is throw it in the garbage. Wideband should have all the clips that plug and play after you weld a bung into your downpipe.

[mad082]

What's the point of an AFR gauge?

I'm not trying to be smart, just genuinely interested.

Thanks.

the ones that go to the stock o2 sensor: to see if your o2 sensor is functioning properly, and to look pretty. you can also use it to drive more economically.

wideband setup: for tuning purposes

[Newy]

f**k a proper wide band sensor welded in is a fkn good idea! any more info would be great!

[R31Nismoid]

What's the point of an AFR gauge?

I'm not trying to be smart, just genuinely interested.

Thanks.

The Autobarn ones - there is no point. Those are the ones that wire into the O2 sensor or similar.

They are utterly useless and do not give any useful information.

The only way is with a proper wideband sensor to output meaningful data to a ECU/Laptop etc for logging.

Would look similar to below

These type could be hooked upto a PROPER gauge, or ECU/laptop pinouts etc

I suspect that this thread is about the first type however... Because if you knew about the second one, you wouldn't be asking how to install it

[03osh]

yeah i've just got the el cheapo... i never realised there was a difference... that sucks... ah well flashy lights ftw