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Wideband Gauges

This is a discussion on Wideband Gauges within the Forced Induction forums, part of the LSx Technical Help Section category; ...

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    Member Double0me's Avatar
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    Wideband Gauges

    What is the difference between Wideband and Narrowband?.... Besides one being narrow and one being wide. I know it reads air and fuel, but what’s the difference between the two?

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    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    A wide band gives a more precise measurement of the AFR's.

    Whereas a narrow band has less function and gives a more basic less detailed reading of AFR's.

    More or less just enough to make it have Idle/driveability and pass emissions..
    Last edited by Smittro; 02-28-2011 at 01:04 PM.
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    TunedbyFrost.com Tuner Frost's Avatar
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    The narrowband O2 is only accurate around stoich, which is 14.68-ish:1. This is the leaner mixture level that your car targets in closed loop (light throttle/cruise/etc) and they provide the feedback for the PCM to maintain this range through a process called trimming.

    The wideband oxygen sensors can see a much broader range of AFR; typically 10-20:1 (instead of just mid-high 14s like the NBO2) and must be used for WOT AFR measurement.

  4. #4
    Member Double0me's Avatar
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    Thank you Gentlemen, That's what I was wondering.

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