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Thread: missing min injector pulse width table

  1. #1
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    missing min injector pulse width table

    2010 camaro L99, Magnacharger TVS 2300, 415ci LS3,Kooks long tubes, yank ss3200, 3.73 rear

  2. #2
    Senior Tuner DSteck's Avatar
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    Doubt it. I've run ID850s in stock cammed 550rpm Camaros, and the pulse width shows up as 0.5ms with zero startup problems. Ted Jannety is nuts.

    DSX Tuning - St. Louis, MO
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  3. #3
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    I'd have to agree.

    Note that he completely avoids answering my question as to what he thinks the difference is between those two tables.

  4. #4
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    Bill@HPTuners's Avatar
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    Looks like its a min off time constant, I'll ask Chris about it when I see him online to see if its something we should add. Sometimes these redundancy things are just that, doesn't always mean we need to add it but we'll take a look.
    Needle, meet haystack

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    Ted is always selling what he has. Never will he say something good about another product.

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    HP Tuners Owner Chris@HPTuners's Avatar
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    the value in question is an injector minimum OFF time. ie. how long the injector must be off during each injector cycle. ie. even when your injectors are at 100% duty cycle they are still switching off for this minimum amount of time each cycle. It has no bearing on minimum pulse width.

    in the thread linked, it looks like although SCT has this param the label contradicts itself. First half says its the minimum injector on time, second half says its the injector off time.
    I count sheep in hex...

  7. #7
    Senior Tuner DSteck's Avatar
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    Lol. Awesome.

    DSX Tuning - St. Louis, MO
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  8. #8
    Senior Tuner IDRIVEAG8GT's Avatar
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    Injector control Fail/Win/Gay.
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  9. #9
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    Quote Originally Posted by Chris@HPTuners View Post
    in the thread linked, it looks like although SCT has this param the label contradicts itself. First half says its the minimum injector on time, second half says its the injector off time.
    Yeah, that had me confused. Thanks for the clarification.

    Beware the wrath of the Jannetty Brigade, Steck.

  10. #10
    Your saying there is a minimum time between pulses that can be adjusted, so when you have 100% duty cycle that means you have the injector open 100% of the time minus this value, so could you extend the limit of a given injector by reducing this value to near 0?
    Not planning to try this, just curious.
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    Self tuned.....at this point poorly but getting better, making 414rwhp

  11. #11
    Senior Tuner DSteck's Avatar
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    Quote Originally Posted by bluetorp View Post
    Yeah, that had me confused. Thanks for the clarification.

    Beware the wrath of the Jannetty Brigade, Steck.

    Like I give a f...

    DSX Tuning - St. Louis, MO
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    Just say no to bull s***.
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  12. #12
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    Quote Originally Posted by DSteck View Post
    Like I give a f...
    Haha, I got a few nasty PMs from people after daring to not completely agree with him on some topic or another...


  13. #13
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    Quote Originally Posted by bluetorp View Post
    Haha, I got a few nasty PMs from people after daring to not completely agree with him on some topic or another...
    You should have read the discussion I had with him on stock spark plugs. He claims the stock zr1 (also z06) spark plug should be used in applications above 800rwhp.He claims they were enginered for a boosted application by GM. He said this before I stated that the 7.0l NA z06 uses the same spark plug.
    Stock spark plugs are to be used in anything under 800rwhp.

    He had half of that forum putting STOCK spark plugs in their motors at the stock gap.
    He is very well protected on that forum due to his "gifts" to the moderators.

    I have a few of his SCT %th Gen tunes for Whipple and KenneBell combos and also simple boltons. You should see his SCT tune for the KenneBell compared to the factory KenneBell tune.

    None of them had the cranking fuel tables modified. That would have cured his "starting rich" condition.
    Last edited by Sam88gta1; 04-17-2012 at 12:02 AM.

  14. #14
    HP Tuners Owner Chris@HPTuners's Avatar
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    Quote Originally Posted by Xjas View Post
    Your saying there is a minimum time between pulses that can be adjusted, so when you have 100% duty cycle that means you have the injector open 100% of the time minus this value, so could you extend the limit of a given injector by reducing this value to near 0?
    Not planning to try this, just curious.
    the injector must close to prevent it burning out. Typically the value is around 0.5ms, i don't plan on adding it to the editor.
    I count sheep in hex...

  15. #15
    Id comment but then Id get more PMs from Ted about his 800 Gen5 Custom tunes he done.

  16. #16
    Senior Tuner DSteck's Avatar
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    FYI, I spoke with Paul Yaw about this. For Injector Dynamics (and I'm sure this relates to other injectors as well), there is a minimum 0.75ms required time to keep the injector linear. The factory value of 0.8ms is pretty sufficient for all applications.

    DSX Tuning - St. Louis, MO
    Injector Dynamics dealer/supporter/lemming
    http://www.facebook.com/dsx.tuning
    Just say no to bull s***.
    IF YOU WANT HELP, POST A FILE!