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Thread: LM1 users

  1. #1
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    Default LM1 users

    What values are you programming into the lm1 analog output in order to get correct readings to use the Lm1 PID?

    I am getting sort of innacurate readings... a lot leaner on efilive vs logworks...

    any helps would be appreciated..

    thanks
    "All that is needed for the triumph of evil is that good men do nothing..."

  2. #2
    Guess who's back!!!! Black02SS's Avatar
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    I just noticed the exact same thing today. I am going to re-calibrate the O2 in the morning and see if that makes a difference. I will see what I can come up with and let you know in the morning.

    ie. LM1 reads 14.0, Live is displaying 14.7 as a average.

  3. #3
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    Is the LM1 sampling a lot faster than Live ie (30fps compared to 10 fps) if so this may be the reason for the discrepancy. Maybe the LM1 guage and stuff need some kind of dampener
    EFILive - The Single version of the Truth

    Larry - HumpinSS

  4. #4
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    If you see logworks the output at logworks is damped...

    but.... the lm1 will output to 12/sec...

    if efilive reads @ 10/sec there is no way to see the afr reading faster than 10/sec..
    "All that is needed for the triumph of evil is that good men do nothing..."

  5. #5
    Lifetime Member johnv's Avatar
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    I am seeing the same problem. Currently just using the std default anilog output setting in the LM1 and the LM1 pid in flashscan.
    Had thought of maybe setting anilog output up the same as another wideband (LM1 is programmable) and using there flashscan pid.
    any sugestions ?

  6. #6
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    I have the same problem as well. The AFR in EFILive is always leaner by .3 to.7 than the data in Logworks. I do not think the problem is with EFILive because I had the same problem when I was using the AC Pressure sensor as the PCM input for the LM-1 output voltage.
    It seems to me that there is a discrepancy between what the LM-1 records and what it outputs.


    John

  7. #7
    Guess who's back!!!! Black02SS's Avatar
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    Here is a new formula I am using and it apprears to be spot on. I have checked at several AFR ranges and all appear to be within .1.


    AFR = ({EXT.AD1}*1.598)+10

  8. #8
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    Quote Originally Posted by black02ss
    Here is a new formula I am using and it apprears to be spot on. I have checked at several AFR ranges and all appear to be within .1.


    AFR = ({EXT.AD1}*1.598)+10

    What scale are you using on the LM-1?

    What is the firmware version of your LM-1?

  9. #9
    Guess who's back!!!! Black02SS's Avatar
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    Set .5 Volt -----equals 10 AFR

    Set 4.5 Volts --equals 18 AFR

    Firmware is the newest as I just updated it on Friday.

  10. #10
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    I just updated the firmware in the LM-1 and did a recal.

    I let the car idle until it was in FTC 17 and then recorded a 10min log with EFILive and with the LM-1.
    From the LM-1 log the average AFR is 14.66391:1
    From EFILive the average AFR is 14.96731:1

    EFILive reads .3034 lean at idle.

    I am using the PID
    AFR = {EXT.AD1}*2+10

    LM-1 scale is 0v=10, 5v=20

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