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Thread: Injector Offset Adder - Clarification

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  1. #1
    Fuel Injected! Terminal_Crazy's Avatar
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    Injector Offset Adder - Clarification

    Hi guys, can someone explain the Injector Offset Adder Table
    I'm using the EEXTRA.xdf file for a '95 LT1 8051 pcm. and also Steveo's 3.6 XDF

    OK The Injector Voltage Offset table is pretty straight forward (adjust injector for voltage variations).
    The Injector Offset Adder I understood was to cover the dead time before the injector is fully open.

    I'm wondering if the two headings are swapped around?
    It has two columns:
    Adder (usec) and BPW(usec)

    The fixed column: adder goes from 488usec to 1952usec whilst the BPW is editable

    Can anyone confirm this is wrong in the XDF

    Thanks
    Mitch

  2. #2
    Fuel Injected! jthompson122183's Avatar
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    Is it the same for both xdf I haven't worked on eextra for a few. Or is steveo different?
    97z28 A4 obd1 swap(16188051)
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  3. #3
    Fuel Injected! Terminal_Crazy's Avatar
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    Steveo's are correct i think
    EEXTRA has columns swapped over which had me confused. (Not very hard)

    Mitch

  4. #4
    Fuel Injected! jthompson122183's Avatar
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    Quote Originally Posted by Terminal_Crazy View Post
    Steveo's are correct i think
    EEXTRA has columns swapped over which had me confused. (Not very hard)

    Mitch
    I'll make a note of that. I started with a old version of eex 2.something I think, Bear with as I'm still quite new to learning this stuff. If you have any recommendations or know anything else that is off or know what something is speak up, I'm all ears. My goal with eextra is when comparing files we don't see "Item Not Defined" anymore
    97z28 A4 obd1 swap(16188051)
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  5. #5
    Fuel Injected! Terminal_Crazy's Avatar
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    Cool.
    I'll keep my eyes posted then.

    Thanks
    Mitch

  6. #6
    Fuel Injected! Terminal_Crazy's Avatar
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    What i was actually asking was what does the adder actually do?

    add the usec time to the BPW or deduct it from the calculated time.

    ie. If my bpw was at 1.952 ms and I add 100 into the (1952usec) table would it deduct 100usecs worth of fuel (the amount of injector dead time) from the calculated BPW ??


    Mitch

  7. #7
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    Terminal did you ever find out exactly what effects this has. I have played with it many times but didn't see much if any difference. Some bins have it 381.48 BPW then gradually getting lower to 30.52 BPW while I believe it's the corvette has nearly the same though has 228.88 BPW between 793 - 1464 Adder columns.

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