Battle Max

Sup im having a a/f guage installed and i was wondering which o2 sensor is the common one to tap into?? i did use the search function and couldnt come up with anything conclusive.

thanks
Jon

funnylittlman

iTrader: (1)

I'll tell you when I install mine in a couple days

We'll find out!

The_Bomb

Either front O2 sensor. They are wires 50 or 51 on the ECU if you want to keep it inside of the car.

Adam

Sprint

iTrader: (10)

http://forums.maxima.org/showthread....130#post281130

http://forums.maxima.org/showthread....541#post281541

Aaron

iTrader: (4)

Sprint........how did you get that info? tsk tsk.......

Sprint

iTrader: (10)

mayhem_J30

...so are you just gonna monitor one half of your motor?

Sprint

iTrader: (10)

to have an effective A/F gauge you should buy a separate O2 sensor for it.. other wise its just a bunch of blinking lights going up and down.. not really doing much and not accurate.. you r better off buying an EGT Gauge

EZEMaxima

So Sprintmax, how about the rear O2 sensor? If not then where would you recommend install the separate O2 sensor.

I have an Apexi turbo timer and i hooked up the A/F sensor wire to the rear O2 sensor.

funnylittlman

iTrader: (1)

I thought tha the rear one is the "dummy" sensor, and doesn't really do much...?

Chebosto

iTrader: (1)

wth?

rear?

nooo.

the rear does nothing.

only the front two tell the ECU the amount to alter fuel/air with.

if anything, you should be installing a wide band o2 sensor to help you with your turbo timer....

redoit.

tampamax

Sorry for being the idiot here but EGT guage? where? why?
And where should your "seperate" O2 sensor go?

Sprint

iTrader: (10)

Exhaust Tempreture Gauge.. it measures the Exhaust tempreture..

as Cheston said above a wide band O2 sensor would be great because it will give more accurate readings.. the 02 sensor of the car is connected to so much **** on the car its really ver inaccurate

EZEMaxima

So where do you recommend installing the wide band O2 sensor? Before the cat??? I have a Stillen Y-pipe and there is a hole that is plugged on the lower front half but i'm not sure it will accept a O2 sensor.

redmaxpa007

iTrader: (21)

if you have a hole plugged in your y pipe then it is is for an 02 sensor.


and yes, before the cat...

EZEMaxima

So what does the rear O2 sensor is there for. If i disconnect it, my CHECK ENGINE light comes on.

Any brand you guys can recommend for the wide band O2 sensor. I'll be checking if an O2 sensor fits into the hole this weekend.

tampamax

Thanks for inlightning me without blasting me for not knowing.
Next ?, how stable should the a/f guage be if it is hooked up properly? Mine bounces back and forth all the time, probably a couple times a second, until I go to wot; then it stays rich until I let up. Should it be more stable than that? Bought the car with the guage already hooked up. Just asking cause I want to make sure to take care of the car and I want everything to be done right.

funnylittlman

iTrader: (1)

Supposedly that's normal....

Sprint

iTrader: (10)

yeah due to the fact it doesn't have its own separate O2 sensor.. its just a bunch of fancy lights..

tampamax

So if you hook up a separate O2 sensor will the guage lights not bounce around? If it does then how much difference will it be between what I have now, if any? Also was told that running leaded race fuel will "corrupt" or ruin the O2 sensors. What would be the reason for that? Is there a way to run the race fuel safely(double negative-I know) without swapping them out for extremely expensive ones?

Sprint

iTrader: (10)

i am not sure.. because i havn't really done it.. but most of the guys that have done it have like 200 - 300 A/F gauges.. like Y2KevSE, MardigrasMax and sx7r..

i have run race fuel at the track

but i wouldn't run it unless you are running Nitrous or Turbo/Supercharged