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Thread: OBD logging and real-time histogram

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  1. #1
    Carb and Points!
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    Jan 2020
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    OBD logging and real-time histogram

    I've very new to this and am very excited about all the work that has been done on PCMHammer. Is there a data logging tool with realtime histogram capabilities or is everyone logging and then doing post-processing. It would be great to be able to drive around and see which parts of the VE table have been captured so that I can drive differently to get the undersampled data points.

  2. #2
    Fuel Injected! woody80z28's Avatar
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    I'd love to know this as well. I'm tuning with lsdroid, but looking for a good datalog solution.
    80 Camaro Z28 - 550hp AFR 383 / T56 6spd (Holley HP EFI)
    91 Beretta "SS" - 260hp 3400 MPFI / HM282 5spd (7730/$A1)
    94 Silverado Z71 - 300hp Vortec 357 TBI / NV4500 5spd (7427/$0D) gone but not forgotten
    01 Silverado 2500HD - stock Vortec 8.1 / ZF6 6spd (0411/8322)

  3. #3
    Fuel Injected!
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    PCM Hammer includes a primitive logger in Release 11, but I just noticed that it was missing the .profile files that are needed to actually use it. So I just added them to the zip file:

    https://github.com/LegacyNsfw/PcmHac.../2019.12.30.01

    There's no real-time histogram, but I agree that would be a good idea. For now, you'd have to post-process the .CSV file in another tool. Excel could probably do it.

    Also, it would really benefit from more / better profiles (lists of parameters to log). It's pretty straightforward to create profiles using SAE PIDs, if you're comfortable editing XML. Logging anything that isn't an SAE PID would require doing some reverse-engineering to find the memory location of the parameter you want... that's more work, but I'm sure we'll hunt down the most useful parameters over time.

  4. #4
    Fuel Injected! steveo's Avatar
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    if you're using an ELM chip try tunerpro with the ELM plugin. its 'history table' will pretty much do what you ask, i think.

  5. #5
    Fuel Injected! woody80z28's Avatar
    Join Date
    Nov 2011
    Location
    Walton, NY
    Age
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    I just bought a USB cable and couldn't get it to work. The driver said something about being phased out in 2012 and I couldn't get it to assign as a COM port. Would not recommend it:
    https://www.amazon.com/dp/B081S15H7R

    In related news...has anyone been able to log in TunerPro via an OBDLink? LX ideally? I'm logging in torque, but it leaves a lot to be desired.
    80 Camaro Z28 - 550hp AFR 383 / T56 6spd (Holley HP EFI)
    91 Beretta "SS" - 260hp 3400 MPFI / HM282 5spd (7730/$A1)
    94 Silverado Z71 - 300hp Vortec 357 TBI / NV4500 5spd (7427/$0D) gone but not forgotten
    01 Silverado 2500HD - stock Vortec 8.1 / ZF6 6spd (0411/8322)

  6. #6
    Fuel Injected! woody80z28's Avatar
    Join Date
    Nov 2011
    Location
    Walton, NY
    Age
    34
    Posts
    235
    Looking like this will work via OBDlink in TunerPro. It connects on my bench, will try it in the truck tomorrow.

    Anyone know how to add EGR position to the datastream? That's where I'm wiring in my wideband 0-5v.

    According to a post from 2009 I found it's PID.2811
    https://ls1tech.com/forums/pcm-diagn...l#post11938549
    Last edited by woody80z28; 02-18-2020 at 11:41 PM.
    80 Camaro Z28 - 550hp AFR 383 / T56 6spd (Holley HP EFI)
    91 Beretta "SS" - 260hp 3400 MPFI / HM282 5spd (7730/$A1)
    94 Silverado Z71 - 300hp Vortec 357 TBI / NV4500 5spd (7427/$0D) gone but not forgotten
    01 Silverado 2500HD - stock Vortec 8.1 / ZF6 6spd (0411/8322)

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