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difference between afr and wideband

Barnes

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Feb 9, 2003
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Richland, WA
Are you referring to the cheapie Autometer AFR gauge??
 

boostedinaz

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Scottsdale, AZ
Quoting yeti:
Is the wideband have numbers as the.afr gauge is not as accurate?



What?
 

steve

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You're going to have to try harder than that, dude. WTF are you asking?
 

Street Surgeon

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Quoting yeti:
Is the wideband have numbers as the.afr gauge is not as accurate?



Yes my friend, you can haz cheeseburger.
 

Specter

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I think he is trying to ask if a wide band gives accurate numeric value, as the cheap afr gauges are normally not accurate and many only show rich/lean.
 

slugsgomoo

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Even though the question is... /ubbthreads/images/graemlins/uhh.gif might as well answer it properly. /ubbthreads/images/graemlins/wink.gif

Narrowband AF gauge = useless

Wideband AF meter = useful
 

boostedinaz

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Quoting Specter:
I think he is trying to ask if a wide band gives accurate numeric value, as the cheap afr gauges are normally not accurate and many only show rich/lean.



That's what I got from it as well.

To bad he isn't going to put time into writing something in a coherent manner because I don't have time to answer.
 
Last edited:

yeti

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Oct 13, 2010
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san diego california
Sorry the reason it sounds special-face is cause I don't know the right names for everything
What I was trying to ask was what's the difference

But from what I'm hearing
Its the same thing?
I really don't know sorry for confusing
 

steve

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What leads you to think they are the same thing??? Look at slugs post:

Quoting slugsgomoo:
Narrowband AF gauge = useless

Wideband AF meter = useful



A narrowband blinky gauge will not be any use for tuning or troubleshooting the car. It will give a completely vague "rich" or "lean" reading based on the stock O2 sensor. The stock O2 sensor is not intended to read the AF with great precision.

A wideband is intended to read your AF with great precision, and therefore it will give you meaningful information with which to tune.
 

mountaineerjeff

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Oct 21, 2008
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west virginia
the confusion is because he doesnt know exactly what they are called.

they are both called AFR gauges.
one operates on a narrowband, and only gives you rich-lean 'guesses'
the other is wideband, and gives an actual AFR number to the 10th such as '11.5'
 

belize1334

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Bozeman, MT
I think the question is more basic than that.

AFR = Air Fuel Ratio... It's a measure of how rich/lean your mixture is.
Wideband = Type of measurement device which reports the VALUE of the AFR over a broad range of values (from say 8.0:1 to 18.0:1)
Narrowband = Type of measurement device which reports the VALUE of the AFR over a narrow range of values (from say 14.0:1 to 15.4:1)

Most cars have a narrow band which helps them center the AFR on the ideal cruising value (stoich = 14.7 for gasoline). You can install a wideband if you want to have accurate readings under more extreme circmstances (typical AFR for BOOST is 10:0 to 12:0). A blinky-blinky narrowband AFR gauge is an attempt to get more info from a narrowband then is actually available. They're useless except as paperweights and they're lousy for that.
 

yeti

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san diego california
Thank you for the explaining
And sorry for the confusion

So a narrow band is not worth the sweat installing
Cause I got 1
And I thought they were the same because arnt they both AFR gauges
Just one is useless
 
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