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  1. #1
    mac_man_luke's Avatar
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    Vtech logger vs MTXL AFR

    Hey all


    Has anyone noticed a big difference between AFRs on Vtech logger vs an MTXL?

    my mtxl is showing 10s but vtech logger low 13s.

    any suggestions?

    Luke


  2. #2
    Matatan tocullo's Avatar
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    Wow thats a big difference!!!

  3. #3
    Sturm215's Avatar
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    Quote Originally Posted by mac_man_luke View Post
    Hey all


    Has anyone noticed a big difference between AFRs on Vtech logger vs an MTXL?

    my mtxl is showing 10s but vtech logger low 13s.

    any suggestions?

    Luke
    this at the same time.. or just switching between the two?

  4. #4
    mac_man_luke's Avatar
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    switching, only got one sensor.

    Going to play with it again next weekend - MXTL had not been free air calibrated in a while so maybe that was the problem.

    From my numbers last year the MXTL seemed to rich but vtech too lean.

  5. #5
    GasResearch-VT.SE's Avatar
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    10:1 would run like a bag of poo between 3000-6500 rpm

  6. #6
    dpracing's Avatar
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    Quote Originally Posted by GasResearch-VT.SE View Post
    10:1 would run like a bag of poo between 3000-6500 rpm
    A bag of poo? Please explain this technical information please. LMAO

  7. #7
    mac_man_luke's Avatar
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    Quote Originally Posted by GasResearch-VT.SE View Post
    10:1 would run like a bag of poo between 3000-6500 rpm
    was only 10:1 ish over 7500-8000rpm

    in 12/13s off boost according to the mxtl.

    Overall felt pretty good but thats not a real safe way to gauge lol.

    Going to give it another go this saturday hopefully.

  8. #8
    boost junkie skidoochris's Avatar
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    I think they mean 10.1 afr is fat rich and would run bad

  9. #9
    mac_man_luke's Avatar
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    was in the 10s, probably closer to 11 but still bit rich but that was only really at WOT.

    Have a feeling it was reading a bit rich though.

    Might be time for a new sensor to be sure. Its about 2 seasons old now (and lived in the exhaust mani over winter)

    edit: damn they are dear $90ish!

  10. #10
    mibunkerking's Avatar
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    try a auto parts store first. I found the same sensor from my local pepboys for $49 vs $90+ shipping from innovate.

    here you go. search for part #17014 at what ever parts store you guys got down there.

    http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_wideband-air-fuel-oxygen-sensor-bosch_18730616-p?searchTerm=17014

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