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Thread: LM-1 Programming & Settings

  1. #1
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    Default LM-1 Programming & Settings

    What are accurate settings for analog outputs 1 & 2 on the LM-1 to work with V1 on V7.5? My current seetings are:

    Analog Output One:
    .996v @ 10.01AFR
    4.996v @ 19.99AFR

    Analog Output Two:
    .996v @ 10.01AFR
    1.998v @ 19.99

    My logged AFR results come in leaner than the reading on the meter. I've searched and read a lot of threads but there are varying proposals for getting the programming right.

    In the past when working V7.3.3 I made some mods to the sae-generic.txt. However, those settings skew the results way rich with my current setup. The only change I currently have to the sae-generic.txt file is maximum AFR at 20 rather than 30. If any edits ought be made there, let me know.

    Thanks for any help!

  2. #2
    Lifetime Member mr.prick's Avatar
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    How to match WBO2 output to {B3601}
    I suggest programming it with a 0 volt value,
    this way you don't have to back calculate the intercept.

    You want the voltage that represents Lambda 1.00 to be the same as your stoich AFR.
    The maximum and minimum in the sae_generic.txt & calc_pids.txt are for gauges and other references,
    you will still see larger/lower values in a log.
    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

    _________________________________________________

  3. #3
    Joe (Moderator) joecar's Avatar
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    RevGTO,

    I may or may not have asked this already:

    How old is the Bosch sensor attached to your LM-1...?

  4. #4
    Joe (Moderator) joecar's Avatar
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    You can program your LM-1 for this:
    0V=AFR 11
    5V=AFR 16
    That gives more resolution.

    Also, what fuel do you use... mr.prick has a point about stoich AFR.

    We can setup a calc_pids.txt file for you.

  5. #5
    Lifetime Member 5.7ute's Avatar
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    Check out post 7 here. http://forum.efilive.com/showthread....ight=2.5+volts
    I found this method works extremely well for removing offset errors & keeping scanned values accurate .
    The Tremor at AIR

  6. #6
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    Quote Originally Posted by joecar View Post
    RevGTO,
    I may or may not have asked this already: How old is the Bosch sensor attached to your LM-1...?
    We purchased the unit in Sept. 06. I co-own it with a friend, and we swap it back and forth as we're doing mods and tuning. It spends most of its time on the shelf. It's not like an LC-1 that's continously installed. But it's been in my car daily for a couple of months lately as I've been trying to get my CL fueling in line.

    Fueling is good ol' 91 octane ... the best we can get here for LS1 needs.

  7. #7
    Lifetime Member mr.prick's Avatar
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    Quote Originally Posted by RevGTO View Post
    Fueling is good ol' 91 octane ... the best we can get here for LS1 needs.

    I feel your pain, that's all I can get where I live.
    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

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  8. #8
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    Quote Originally Posted by joecar View Post
    You can program your LM-1 for this:
    0V=AFR 11
    5V=AFR 16
    That gives more resolution. We can setup a calc_pids.txt file for you.
    I've seen that suggested. But I'm not so much concerned with finer resolution as I am accuracy between meter readout AFR on the LM-1 and logged data in EFILive.
    I then changed the LM-1 pid in the programme files/efilive/V7/user configuration/sae generic txt file to (({EXT.AD1}-({EXT.AD2}-2.5)*3)+7.35 .
    That's the transposition of the LC-1 pids to the LM-1 ... I've seen that advocated by several guys.
    *CLC-00-928
    V 0.0 5.0 .1 "{EXT.AD1}"
    AFR 10.0 20.0 .1 "({EXT.AD1}*1.9936)+9.9832"
    *CLC-00-929
    factor 0.0 2.0 .1 "{CALC.AFR_LM11.AFR}/{GM.AFR}"

    *CLC-00-930
    V 0.0 5.0 .1 "{EXT.AD2}"
    AFR 10.0 20.0 .1 "({EXT.AD1}*1.9936)+9.9832"
    *CLC-00-931
    factor 0.0 2.0 .1 "{CALC.AFR_LM12.AFR}/{GM.AFR}"
    This altered sae_generic.txt was advocated by some guys on the forum a few years back and was what I had in 7.3.3.

    All this is what I meant by varying proposals ... different configurations will give different results. I guess I can try the LC-1 settings ... I was hoping to find a consensus and straight answer about these settings.

  9. #9
    Lifetime Member 5.7ute's Avatar
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    Quote Originally Posted by RevGTO View Post
    I've seen that suggested. But I'm not so much concerned with finer resolution as I am accuracy between meter readout AFR on the LM-1 and logged data in EFILive.

    That's the transposition of the LC-1 pids to the LM-1 ... I've seen that advocated by several guys.
    This altered sae_generic.txt was advocated by some guys on the forum a few years back and was what I had in 7.3.3.

    All this is what I meant by varying proposals ... different configurations will give different results. I guess I can try the LC-1 settings ... I was hoping to find a consensus and straight answer about these settings.
    The transposition of the lc1 settings gives a better resolution of the AFR reading. Add to that the secondary channel flat voltage which will show any offsets, and you will scan what you see on the screen.
    The Tremor at AIR

  10. #10
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    Ok, sounds good, I'm going to try it. Now for a dumbass question, but I want to be sure ... the EXT.AD1 pid in EFILive corresponds to Analog Output 1 on the LM-1, correct?

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