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Thread: JTEC Power Enirch Units?

  1. #1

    JTEC Power Enirch Units?

    1996 Dodge Ram 2500 with the 5.9.

    What values are used in the Power Enrichment tables?
    Are they multipliers for injector pulse width?
    If they're Equivalence ratios, where could i find the target stoich?

    Capture55.PNG

    Thanks!
    Attached Files Attached Files

  2. #2
    Tuner in Training
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    to my understanding they are a multiplier at least thats what the description says in vcm editor.
    01 dodge dakota 5.9 swapped nv3500, ported stock heads, m1 intake, 220 220 custom grind comp cams, 10.3:1 compression tuned by me with hp tuners.

    15 jeep jk 3.6 lifted on 33s 87 octane custom tune by me with hp tuners

    04 dodge dakota 4.7 air ram heads, 08 cams, 08 intake manifold, 10.5:1 compression, 341whp custom tuned by me with hp tuners.

  3. #3
    do you happen to know how rich they run under WOT?
    Thanks for the info!

  4. #4
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    air fuel ratio i run on my truck is 12.8 to 13.2 ish area im not sure what they run from the factory i feel like it was down in the 11s it been so long.
    01 dodge dakota 5.9 swapped nv3500, ported stock heads, m1 intake, 220 220 custom grind comp cams, 10.3:1 compression tuned by me with hp tuners.

    15 jeep jk 3.6 lifted on 33s 87 octane custom tune by me with hp tuners

    04 dodge dakota 4.7 air ram heads, 08 cams, 08 intake manifold, 10.5:1 compression, 341whp custom tuned by me with hp tuners.

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    Hi, have you found a way to log when the PE goes active ? to me that would be a massive help on these older ecus, i am sure a flag must be set, and it would be great to see in the logs?

    if you knew when PE was active then you can easily see what these tables do - I have a similiar question on a Jeep ECU at the moment

    if anyone knows a way please share

  6. #6
    Just found some great documentation about JTEC posted here: https://forum.hptuners.com/showthrea...l=1#post587525
    https://techauthorityonlinedemo.extr...8169999128.pdf

    Attached in case the above link gets orphaned:
    8169999128.pdf

  7. #7
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    Quote Originally Posted by Dutch View Post
    Just found some great documentation about JTEC posted here: https://forum.hptuners.com/showthrea...l=1#post587525
    https://techauthorityonlinedemo.extr...8169999128.pdf

    Attached in case the above link gets orphaned:
    8169999128.pdf
    thats a great find !

    thanks

    anyone know how to log when pe goes active ?

  8. #8
    Tuner in Training jimmyZJ's Avatar
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    Quote Originally Posted by 3barboost View Post
    Hi, have you found a way to log when the PE goes active ? to me that would be a massive help on these older ecus, i am sure a flag must be set, and it would be great to see in the logs?

    if you knew when PE was active then you can easily see what these tables do - I have a similiar question on a Jeep ECU at the moment

    if anyone knows a way please share
    There are MAP - VAC and RPM thresholds, above those threshold it goes into open loop / PE mode
    The only thing you can log is your o2 sensor voltage unless you have a wide band o2 sensor
    In PE lambda should be below 0.8

  9. #9
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    On my 2000 XJ jeep JTEC I can log "fuel system Status" and it logs/shows you closed to open loop status
    current build: 2000 Jeep Cherokee XJ, 4.6L stroker w/mild cam, competition ported Newcomer Racing head, Hardland Sharp rockers, full 3" exhaust, 62mm TB. 24# injectors etc..

    LS6 swapped Porsche 944