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Thread: LC-1 to V2 A/D

  1. #21
    Joe (Moderator) joecar's Avatar
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    Your PCM does not support EQIVRATIO...!?

    Ok, then edit the calc_pids.txt file using Notepad, change {GM.EQIVRATIO}*{EXT.WO2LAM1} to {EXT.WO2AFR1}/{GM.AFR} be surgically precise (don't change anything else).

  2. #22
    Lifetime Member EagleMark's Avatar
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    Syntax part was easy...

    Now I know you just talked me into using EQRATIO or Lamda and forget about AFR.... but I tried {GM.AFR} and it to is not a valid PID with more info grayed out...

  3. #23
    Joe (Moderator) joecar's Avatar
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    Hmmm, no GM.AFR...? Upon connecting to PCM in vehicle (green button), did you validate pids...?

    I would prefer it if GM.EQIVRATIO could be used...

  4. #24
    Lifetime Member EagleMark's Avatar
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    Yup tried to validate both PIDs, twice or so..

  5. #25
    Lifetime Member mr.prick's Avatar
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    What vehicle/OS?
    Select the pids anyways and record, see if you get data.
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
    LC-1 WBO2

    _________________________________________________

  6. #26
    Lifetime Member EagleMark's Avatar
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    Quote Originally Posted by mr.prick View Post
    What vehicle/OS?
    Select the pids anyways and record, see if you get data.
    OK, I'll try, but would have never thought of that. WO2BEN has always been 0 data as missing piece of info.

    OS 16263425 1998 Chevy Truck using 98-00 Vortec.

    Strange you mention trying the PID although not validating, I had choosen a wrong PID by name (Commanded Air Fuel Ratio B-LS2) and it worked. But hardly an accurate way to get data...

    That said I'm getting time in to the new software and the WideBand is dialed in because of the help here. Which led to next step. With all the BEN PIDS there's got to be one already for this OS? If not it would not be the first time I ran into a dead end with this vehicle. So maybe it is something not done yet? Should I even try to look for other valid PIDS to begin with like Lambda or other EQ Ratio? I don't fully understand the next step other then it's the equation needed for tuning. I ran into another issue with Main VE being Grams*Kelvin/kPa and not supported to Percent which I am used to so have another learning step there.

  7. #27
    Joe (Moderator) joecar's Avatar
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    The various BEN pids are for the various analog widebands (you have serial comms os you can avoid those) and not OS based...

    you have serial comms with your wideband, so you could specifically use CALC.BEN1 or CALC.WO2BEN (it would be a step backward to use the analog BEN pids).

  8. #28
    Joe (Moderator) joecar's Avatar
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    The pids EXT.WO2LAM1, EXT.WO2EQR1, EXT.WO2AFR1 are provided by FlashScan V2 from reading serial comms from the wideband, those are not PCM/OS dependent.

  9. #29
    Joe (Moderator) joecar's Avatar
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    To be able to tune using a wideband, you need the pids:
    - commanded Lambda from the PCM,
    - measured Lambda from the wideband;

    note that Lambda can e expressed in various forms:
    - EQR = 1/Lambda
    - AFR = stoichAFR * Lambda

  10. #30
    Lifetime Member EagleMark's Avatar
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    Quote Originally Posted by mr.prick View Post
    What vehicle/OS?
    Select the pids anyways and record, see if you get data.
    I did get lucky on one! Commanded Air Fuel Ratio B - LS2 GM.AFR_B
    It says 14.7 in data without change.

    Others come up with N/A in data.

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