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Thread: AFR to Lambda Question

  1. #1
    Tuner in Training
    Join Date
    Feb 2009
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    AFR to Lambda Question

    Watching the Greg Banish video he converts AFR to Lambda when using his Lambda pro by the formula provided in his user manual.

    0V = 0.55
    5V = 1.75

    He uses Volts / 4 + 0.55. By using this formula you come up with.

    0V = 0.55
    1V = 0.8
    2V = 1.05
    3V = 1.3
    4V = 1.55
    5V = 1.8

    Which puts you at 1.8 @ 5V. Would this not skew the reading in HP Tuners the higher you get in Lambda?

    Just wondering why he did not use Volts / 4.166 + 0.55 to put you at 1.75 @ 5V?
    2004 Z06 - 403 Stroker - 514HP - Sold
    1968 Chevy C10 SWB - Project
    2009 G8 GT - DD

  2. #2
    Tuner
    Join Date
    Jul 2011
    Location
    Fort worth, TX
    Posts
    57
    that formula is Wideband specific, different widebands have different setups
    2008 GMC Sierra Denali 6.2L 2WD

  3. #3
    Tuner
    Join Date
    Jul 2011
    Location
    Fort worth, TX
    Posts
    57
    2008 GMC Sierra Denali 6.2L 2WD

  4. #4
    Tuner in Training
    Join Date
    Feb 2009
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    32
    Ok so still based off his data.....

    1.75 - 0.55 = 1.2 5/1.2 = 4.166
    2004 Z06 - 403 Stroker - 514HP - Sold
    1968 Chevy C10 SWB - Project
    2009 G8 GT - DD