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question about air/fuel ratio gauges

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Old Sep 25, 2004 | 02:20 PM
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Default question about air/fuel ratio gauges

ok wide band are the ones to get but who does em and whats so abd about the non wideband ones ( sorry to sound silly and dumb)

looking at getting one and wanna know what i need to be looking for
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Old Sep 25, 2004 | 02:25 PM
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Buy the most expensive one you can afford for better stability/accuracy.


Zoo motorsport sell a good cheapish one on their website.

The golden rule for widebands : If the sensor has less than 5 wires dont buy it !
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Old Sep 25, 2004 | 02:30 PM
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simon whats the difference though

will it affect me as im not tunning the car just wanna keep a eye on it

can ya explain what it does ect
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Old Sep 25, 2004 | 02:32 PM
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can ya explain what it does ect
it measures the ratio of fuel to air

basically narrow band is for show and rough idea, wideband is accurate to the point it can be used for tuning!
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Old Sep 25, 2004 | 02:38 PM
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There are two types of guage....

WIDEBAND
Normally has a 5 wires or more for the sensor and will show accurately at all
times the correct AFR .
Not cheap but worth the extra expense for the confidence in the engine.


NARROW BAND
This is only accurate around the stoichometric ratio (perfect combustion point)
Turbo cars need rich mixtures on boost, a narrow band sensor can only say
lean, normal or rich but not how rich.
Although some of these on the market do show an attempted AFR but this
is highly inaccurate and unstable.
This is a cheap method but far fom ideal. More suited for non turbo cars.
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Old Sep 25, 2004 | 02:47 PM
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good explaination simon
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Old Sep 25, 2004 | 03:37 PM
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all i can tell you is, you do not want one
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Old Sep 25, 2004 | 03:38 PM
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lol @Jim technical as always
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