Air ratio install

[fastcivic90]

Hello guys I am trying to install and air fuel ratio gage on my 3000 Gt
any one knows the color code for this cables Tanks .

[Igovert500]

Is it a wideband or did you just get a narrowband? What wires do you need?

Going by wire colors is a sure way to ruin electronics. Go to stealth316.com, look at the ecu pinouts and then you can kinda use this as a guide if it is a narrowband.

[Stealthee]

Narrowband FTL. I put one in my Talon and its useless. It just bounces around and doesnt tell me shit. I am getting a wideband in the next few weeks.

[Mikelb]

Originally Posted by Stealthee

Narrowband FTL. I put one in my Talon and its useless. It just bounces around and doesnt tell me shit. I am getting a wideband in the next few weeks.

I agree... the narrowbands have no accuracy to them and they are too slow to show you what's going on...

[Stealthee]

It looks pretty though.

[fastcivic90]

dude I have not a clue on this wide or narrow ban i only nee the color code but tanks for ur help

[Stealthee]

Narrow band reads off the stock o2 sensor. Wideband uses an aftermarket o2 sensor and gives you a much more accurate reading, enough to tell you the exact air fuel ratio you are running. The narrow band gauge is just "guessing"

[talskinyguy]

I'm not even sure that guessing is accurate. More like its a gauge that blinks colored lights at you.

Narrowband(stock) O2 sensors have 1 purpose, gas mileage when cruising. They do nothing else. Hooking a gauge up to them in an attempt to see A/F ratio is a waist of time, and I consider it counter productive.

[Linebckr49]

Originally Posted by talskinyguy

I'm not even sure that guessing is accurate. More like its a gauge that blinks colored lights at you.

Narrowband(stock) O2 sensors have 1 purpose, gas mileage when cruising. They do nothing else. Hooking a gauge up to them in an attempt to see A/F ratio is a waist of time, and I consider it counter productive.

i am actually looking to maximize my fuel economy when cruising. but i need to understand a little more. i have a book i need to re-read about ECUs and stuff. i bought an HKS S-AFR with the hopes of leaning out the fuel mixture around the 2k-3k rpm range, so i could get better gas mileage when cruising. however, what happens if i decide to go WOT? should i only go WOT after 3k rpm? i don't think my S-AFR can tune based on throttle position, but i'll have to go back and look.

any info would be helpful. perhaps i should start a new thread.

[Mikelb]

Originally Posted by Linebckr49

i am actually looking to maximize my fuel economy when cruising. but i need to understand a little more. i have a book i need to re-read about ECUs and stuff. i bought an HKS S-AFR with the hopes of leaning out the fuel mixture around the 2k-3k rpm range, so i could get better gas mileage when cruising. however, what happens if i decide to go WOT? should i only go WOT after 3k rpm? i don't think my S-AFR can tune based on throttle position, but i'll have to go back and look.

any info would be helpful. perhaps i should start a new thread.

What we're getting at is, you can't tune with a narrowband (standard O2)... you have to buy a wideband, or else the tune would be way off (standard/narrowband are too slow and not accurate) and you could blow your motor...

Best idea is to buy a wideband kit, PERIOD....

[talskinyguy]

Narrowband tells the ECU if you are above or below 14.7:1. You can change your tune, and the computer will just correct it back to how its supposed to be, up to a certain point. If you keep leaning it out past what the computer can correct you will do damage to your motor.

When you go WOT the computer stops reading the o2 sensors and just reads the fuel map. A certain amount of airflow = a certain amount of fuel. This is where you can tune things because you are changing the airflow signal that the computer is receiving.

[Linebckr49]

Originally Posted by talskinyguy

Narrowband tells the ECU if you are above or below 14.7:1. You can change your tune, and the computer will just correct it back to how its supposed to be, up to a certain point. If you keep leaning it out past what the computer can correct you will do damage to your motor.

When you go WOT the computer stops reading the o2 sensors and just reads the fuel map. A certain amount of airflow = a certain amount of fuel. This is where you can tune things because you are changing the airflow signal that the computer is receiving.

makes perfect sense. the wikipedia article on oxygen sensors has some good info as well.

i'm gonna go back and read some more of this book i have called How to Tune and Modify Engine Management Systems by Jeff Hartman.