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Thread: AFR Nightmare

  1. #11
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    As you indicated above, can you edit my calc_pids file to settings that would work with my LM-1? At this point, nothing I have tried seems to work. Remember this is all on V7.
    2000 Formula: 12212156, bolt-ons, 3600 stall, 3.42's.

  2. #12
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    Well, I changedt the sae_generic back to default again, reprogrammed the BB, validated pids, and logged a little. Everything logged normally except for the AFR being wildly off. The strange thing is that the pids validate when connected to the car, but opening the Scantool after disconnecting shows them unsupported again. And again, these are all standard pids like ECT, IAT, TP, VSS, etc.
    2000 Formula: 12212156, bolt-ons, 3600 stall, 3.42's.

  3. #13
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by RevGTO View Post
    As you indicated above, can you edit my calc_pids file to settings that would work with my LM-1? At this point, nothing I have tried seems to work. Remember this is all on V7.
    Ok, I'll edit calc_pids.txt for you later this morning...

    does your calc_pids.txt contain anything else that you added....?

    is your LM-1 currently programmed as you said above:
    Analog Output One:
    2.501v @ 10.01AFR
    2.501v @ 19.99AFR

    Analog Output Two:
    0.88333v @10:1 AFR
    4.21667v @20:1 AFR

  4. #14
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by RevGTO View Post
    Well, I changedt the sae_generic back to default again, reprogrammed the BB, validated pids, and logged a little. Everything logged normally except for the AFR being wildly off. The strange thing is that the pids validate when connected to the car, but opening the Scantool after disconnecting shows them unsupported again. And again, these are all standard pids like ECT, IAT, TP, VSS, etc.
    When the scantool is open and not connected to the vehicle, try this doing this:
    - File->Enter VIN, and enter your VIN,
    - File->Select Controller, and select GenIII 1999-2008 LS1B.

  5. #15
    Joe (Moderator) joecar's Avatar
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    Hi Rev,

    Try the attached calc_pids.txt

    copy it to My Documents\EFILive\V7.5\User Configuration (overwriting the existing calc_pids.txt file)

    you will now have to select the pid CALC.WO2, note it has 4 units (V, AFR, lam, eqr);


    this calc_pids.txt allows you to do Calc.VET

    (i.e. the wideband BEN pid is CALC.WO2BEN which requires selecting GM.EQIVRATIO).


    You must be sure your LM-1 is programmed as follows

    LM-1 Analog Output 1 --> V1 pin C ( EXT.AD2 )
    2.501v @ 10.01AFR
    2.501v @ 19.99AFR

    LM-1 Analog Output 2 --> V1 pin E ( EXT.AD1 )
    0.88333v @10:1 AFR
    4.21667v @20:1 AFR
    Attached Files Attached Files
    Last edited by joecar; November 7th, 2012 at 10:59 AM.

  6. #16
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    Thanks, Joe. One thing I should mention is that the LM-1 changes the Output 2 .88333 to 8.79, the 4.21667 to 4.215, and 20.00 to 19.99 after I program the original numbers in. Should the 10.63/18.63 AFR settings be adjusted?

    Yes, the EXT.AD1&2 should be right as this is the formula that worked before and I haven't reversed the wires into my V1 I will log tomorrow and see what happens.

    I've been studying the Calc.VET tutorial and thread and am beginning to get a notion of how the new calculated pids function. Once I get my actual AFR situation verified, and figure out if I have a bad MAF or some other problem, I plan to do the Calc.VET tuning protocol.

    My observations so far indicate that when I'm MAF+VE my AFR's are normal, but when I go MAF only PE mode above 4000rpm, they go wildly off. This is tough to verify doing sustained WOT on the street while holding the LM-1 and attempting to read the display Logging AFR's makes so much more sense. Thanks again.
    Last edited by RevGTO; November 8th, 2012 at 04:43 PM.
    2000 Formula: 12212156, bolt-ons, 3600 stall, 3.42's.

  7. #17
    Joe (Moderator) joecar's Avatar
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    The 10.63/18.63 mentioned in the calc pid definition are the chart min/max display range (14.63 will be right in the middle).

  8. #18
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by RevGTO View Post
    Thanks, Joe. One thing I should mention is that the LM-1 changes the Output 2 .88333 to 8.79, the 4.21667 to 4.215, and 20.00 to 19.99 after I program the original numbers in.
    ...
    You mean it changes the 10.00 to 9.98 and the 20.00 to 19.99.... that is ok.

  9. #19
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    No success - AFR's still read in the 20-30 range. Joe, are you sure that {CALC.WO2.lam} is the correct function in *CLC-00-110 for analog? The pid system description shows it as WO2-Serial. If that is the case, would {CALC.AFR_LM11}/14.7 perhaps be correct?

    You mean it changes the 10.00 to 9.98 and the 20.00 to 19.99.... that is ok.
    No it leaves it at 10.00 but changes the 20.00 to 19.99 or 20.01 for some reason.
    2000 Formula: 12212156, bolt-ons, 3600 stall, 3.42's.

  10. #20
    Joe (Moderator) joecar's Avatar
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    CALC.LM11 is the pid for the LM-1 programmed to default setting.

    Post your log file.

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