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Wideband O2

Discussion in 'Forced Induction' started by Cashizslick, Mar 15, 2004.

  1. Cashizslick

    Cashizslick !i!i!i!i!i!i!i!i!i!i!i!

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    so what does a wideband O2 sensor do and how is it usefull for tuning your motor ?

    . . Sorry for the dumb question, and yes i searched - cash
     
  2. Cashizslick

    Cashizslick !i!i!i!i!i!i!i!i!i!i!i!

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    BUMP
     
  3. pissedoffsol

    pissedoffsol RETIRED

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    most hondas, with the exception of the 5-wire VX and HX, run a Narrow band o2 sensor, either heated (4-wire) or not heated (1 and 2 wire).

    Most wideband meters have a 0-5 volt output proportional to air fuel ratio. Noarrow band units, like the stock o2, run close to 1 full volt for almost all ari fuel ratios that a car could possible run "well" under. That output is fed back into the gauge or tuning unit and can be converted into a precise air fuel ratio. The stock O2 sensor is very inaccurate for anything other than 14.7:1 airfuel ratio.

    [​IMG]

    as you can see, lean or rich, its still throwing back just under 1 volt. it's near meaningless.
     
  4. pissedoffsol

    pissedoffsol RETIRED

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  5. Iquark

    Iquark Senior Member

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    Hey B, so could we use a stock vx or hx O2 sensor as a Wideband O2 sensor?

    Ian
     
  6. pissedoffsol

    pissedoffsol RETIRED

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    to a certain extent, yes.

    however, they don't work well. i'm not sure exactly why though.
     
  7. Cashizslick

    Cashizslick !i!i!i!i!i!i!i!i!i!i!i!

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    so, thats why we go buy a nice one like AEM's wideband o2?
     
  8. pissedoffsol

    pissedoffsol RETIRED

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    yup, cuz it has a meaningful voltage to return, 0-5 volts which directly corresponds with an a/f ratio (depends on the actual wideband. some may start at one and end at 4, and be less accurate for "steps" between)
     
  9. Cashizslick

    Cashizslick !i!i!i!i!i!i!i!i!i!i!i!

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    who else makes good quality wideband o2's?
     
  10. D See 2

    D See 2 Senior Member

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  11. xj0hnx

    xj0hnx I wanna be sedated VIP

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