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Thread: Wiring up an LM1 in a Vette

  1. #1
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    Wiring up an LM1 in a Vette

    Thanks to torchredfrc on corvetteforum.com for a very good install writeup and for allowing us to share it with others

    http://www.thetuningdoctor.com/wb02new.htm



    It doesn't have to be perfect, it just needs to be done in two weeks...

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  2. #2
    Tuner in Training
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    I just wanted to add a side note to this post. The settings I used in the LM-1 to correct the offset I mention at the bottom of the page are as follows:


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    By setting it to "instantly", don't you get odd results because of reading inbetween exhaust pulses?
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  4. #4
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    I took the liberty of charting your O2 sensors against the LM-1 wideband readings and added a trendline. You go down to about 12.0 AFR at 920mV.

    Why would I need a wideband when my narrowband already reads well over 1000 on occassions. Could I not just extend the trendline to workout my AFRs?

  5. #5
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    Quote Originally Posted by Reucroft
    I took the liberty of charting your O2 sensors against the LM-1 wideband readings and added a trendline. You go down to about 12.0 AFR at 920mV.

    Why would I need a wideband when my narrowband already reads well over 1000 on occassions. Could I not just extend the trendline to workout my AFRs?
    No, because the NB will never read the same twice.
    1999 C5 FRC

  6. #6
    Супер Модератор EC_Tune's Avatar
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    Narrowbands are heat and pressure sensitive and are only accurate at 14.68 AFR period. No substitute for a wideband.

    I have seen 870 mv = 11.5 AFR and 980= 13.5 AFR. Now which do you trust?
    Always Support Our Troops!

  7. #7
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    I had my eyes opened this week when I thought I was rich by 1% and turned out I was lean by as much as 9% in some of the upper MAF ranges!! DON'T TRUST THE NB's.....

  8. #8
    Any new install update ?

  9. #9
    Advanced Tuner blownbluez06's Avatar
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    I just want to add that if you lose the 9v battery, you need to check all of your settings as they will go back to factory default.
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  10. #10
    Why is this still in the FAQ if it just links to a page that has been gone for ages?