A/F Ratio Gauge Question
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This is a discussion on A/F Ratio Gauge Question within the Interior Mods forums, part of the Tech & Modifying & General Repairs category; I'm gonna start getting a little more in depth with my car, but before I do I want to have ...

  1. #1
    Moderator MidKnight's Avatar
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    A/F Ratio Gauge Question

    I'm gonna start getting a little more in depth with my car, but before I do I want to have some gauges so I can make sure everything is copasetic on a day-to-day basis. I was particularly curious about A/F gauges. If I get one, can it be hooked up to the front O2 sensor? I ask because I have the PEP MIL Eliminator on the rear one... Also, does anyone have a recommendation for a good A/F gauge or are they all pretty much the same?

    Thanks

    -MK
    '03 WRX
    '01 2.5RS
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    "Stuff sold by the gram is always going to be more exciting than stuff sold by the pound." - Jeremy Clarkson

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  3. #2
    Registered User is2scooby's Avatar
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    The gauge idea is a good one. Monitoring what's going on under the hood is always beneficial!

    Most A/F gauges (all, IIRC) won't work with the "semi" wideband front O2 sensor. Your MIL Eliminator will also give you "false" readings from the rear sensor. This is all rather moot however as traditional narrow-band A/F gauges are nothing but decoration. As far as tuning goes (anything away from idle really) you really need a Wideband O2...

    You'd be better served by gauges that will tell you the health/condition of your mill... Boost/EGT/Oil pressure/Fuel Pressure/Oil Temp/Coolant Temp, etc...
    Aloha, Richard...
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  4. #3
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    agreed, narrow band A/F gauges that you buy to put in your Apillar, etc are of no use other than covering up a hole IMO.
    03 grocery get'n wagon

  5. #4
    Moderator MidKnight's Avatar
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    Ok, then A/F gauge is a no go...

    I already have a boost gauge, will be receiving my EGT via mail shortly.... what is the next logical gauge I should get? Is one anymore logical as a next gauge than another?
    '03 WRX
    '01 2.5RS
    MODS | PICS | Dyno
    "Stuff sold by the gram is always going to be more exciting than stuff sold by the pound." - Jeremy Clarkson

  6. #5
    Registered User is2scooby's Avatar
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    Oil or coolant temp would be my next choice... Followed by oil pressure and/or fuel pressure...

    With that being said, I have a boost gauge, and wideband o2/afr gauge, and a UTEC to monitor what's going on inside the engine...
    Aloha, Richard...
    Retired Moderator
    TXS Stage 4 UTEC + TMIC + JoeP
    12.75 @ 105.67mph - 1.74 60'

  7. #6
    Registered User Shard's Avatar
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    I'd go oil pressure next.

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