AFR Gauge ????

[90notch_5.0]

I just got a phantom gauge and have no idea how to install it.
1) My car is carbureted and my 02 sensor dont have power. Is there a way i can make them have power so i can hook up my gauge?
2) When i hook up the guage, do i brige it from only one 02 sensor or both of them?
3) To add power to the 02 sensors is just a matter of running some hot wire coming from the battery and a graund?

Here is the gauge just in case you need to see it:
View attachment 211902

 

[HISSIN50]

The gauge won't be real useful, esp on a carbed car.

You'd want to use switched power for the O2's, not constant (battery) power.

 

[srtthis]

throw that in the trash and get a wideband...

 

[90notch_5.0]

WHY!?!?

 

[srtthis]

can you tell me the air fuel for the 2nd and 4th red green and yellow light on that meter?

a true wideband af gauge will give you a number not a light up christmas tree thingy

 

[90notch_5.0]

can you tell me the air fuel for the 2nd and 4th red green and yellow light on that meter?

a true wideband af gauge will give you a number not a light up christmas tree thingy

No its not a wideband.

 

[srtthis]

No its not a wideband.

thats why i said throw it in the trash or find some ricer forum and try to sell it...

 

[Mustang5L5]

It's just a fancy lightshow really.

 

[90notch_5.0]

Tham i did not do my homework right
So you recomend a wideband?

 

[srtthis]

yes...

AEM
FJO
LC-1

 

[90notch_5.0]

Thanks a lot for your help man

 

[srtthis]

no problem...

 

[SVTFreak]

Just FYI, the reason its pretty useless is that it will only display a ratio of approx 14:1 to 15:1. Its only function is to inform the computer when to richen or lean the mixture in relation to the stoich ratio of 14.64:1 (meaning you have a theoretical perfect mixture, no excess air, no excess fuel). But, in the real world, that doesnt work. So at WOT, the mixture goes to a calculated 12.xx:1 or so (i forget the exact number from ford factory) using only the MAF measurement to shoot for a target with no feedback from the 02 sensors since they cannot read any richer than 14:1 or so.

A wideband sensor and guage will allow you to read much richer and leaner than that. For instance, my LC-1 reads 7.39 to 22.xx (forget exactly).

For graphs and explanations, see here Oxygen (O2) Sensor – Narrowband vs Wideband Boost Source

So, like they said, unless you want a pretty lights display, or a warning that something bad happened (probably too late anyway), toss that one and purchase a true wideband for tuning use.

Keep in mind that widebands also require a controller to function properly (to maintain the correct current and voltage drops). Usually included with the kit, so dont just purchase a sensor from JoeBlow on the corner cause he says it will work.