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Thread: It's the little stupid things...

  1. #1
    Senior Tuner
    Join Date
    Nov 2002
    Location
    Central Florida
    Posts
    2,503

    It's the little stupid things...

    So I was logging and tweaking away, noticing a fair
    discrepancy beterrn the displayed and logged WB AFR.
    I took a couple passes through VE table mult-paste
    anyway, but it was making the car run worse.

    In digging through some posts and docs I found that
    the LM-1 wideband PID seems to assume 0-5V for
    10-20AFR.

    But my LM-1's factory default, where it goes every
    time the 9V battery dies, is 0-4V for
    the 10-20 AFR span. It can be set to 0-5, just don't
    bet on it being that way without verifying. And if you
    tell it "factory defaults" in LMConfig, you may get settings
    that don't play right with the HPTuners PID and the
    ones that depend on it (like AFR Error %).

    Reprogrammed the LM-1 for 0-5V span and now it reads
    dead-nuts in the scanner (with the inst amp inline).

  2. #2
    Advanced Tuner blownbluez06's Avatar
    Join Date
    Jan 2008
    Location
    Forney, TX
    Posts
    982
    Damn! Glad to know it loses it's scale settings when the 9v dies or gets replaced before I go out and hose up someone's tune. Thanks for sharing that!
    Hsquared racing engines RHS 427, Procharger F2, Moran Billet Atomizer injectors, Alky Control,Mast LS7 heads, Nitrous outlet kit,Tilton quad disc clutch, DSS shaft, RKT56 ZR1 trans, RPM Quaife diff. Built and tuned by yours truly.

  3. #3
    Potential Tuner
    Join Date
    Jul 2009
    Posts
    5
    Wow..Thanks for sharing that info..

    It'll be a big help..

  4. #4
    Advanced Tuner Pulse_GTO's Avatar
    Join Date
    Apr 2008
    Posts
    329
    Good to know!