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Thread: CALLING EFILIVE....Can I command Pulse width somehow??

  1. #1
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    Talking CALLING EFILIVE....Can I command Pulse width somehow??

    I would like to know what perameter on efilive would allow me to manuallu command pulse width, right now the computer itself formulates what it should be, I want to turn it lower then that.

    Is there a way, what chart can do this??
    '71 chevelle
    Twin turbo ls1
    1000 HP 93 octane street car!
    96 lb injectors

  2. #2
    EFILive Reseller ringram's Avatar
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    Why? If you want to run leaner then use custom os3 and command leaner.
    Get EFILive in europe (http://www.efilive.eu).
    2007 Escalade ESV L92 6.2L VVT.
    2014 VF SV LS3 Maloo.

  3. #3
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    I have that and am. I am trying to lean out my 96 lb injectors with just using a commanded pulse width setting.
    '71 chevelle
    Twin turbo ls1
    1000 HP 93 octane street car!
    96 lb injectors

  4. #4
    Joe (Moderator) joecar's Avatar
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    Can you use Bi-Directional L1/LS6 Spark/Fuel mode in the scan tool to set a leaner AFR (that should reduce the injector pulse width).

  5. #5
    Lifetime Member SSpdDmon's Avatar
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    I've always understood the pulsewidth should be set based on actual injector performance. There are a couple of spreadsheets out there that will help you determine where they need to be set. But if your goal is to lean out the car in a certain area, that should be done with the VE table. The real variable is airflow - not injector performance. That's the reason why all of these custom OS's were created...to run a 2 or 3-bar setup and have the support (ie VE table that extends past 105kPa) required to interpret those sensors. In other words, by changing the VE, you're effectively changing the pulsewidth for that condition (MAP vs RPM).
    Last edited by SSpdDmon; June 8th, 2006 at 04:23 AM.

  6. #6
    Joe (Moderator) joecar's Avatar
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    I thought he said he wanted to do it manually...

  7. #7
    Lifetime Member SSpdDmon's Avatar
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    Quote Originally Posted by joecar
    I thought he said he wanted to do it manually...
    True....but it sounds like he's trying to address a problem. Only thing is, he hasn't stated the problem. He only asked if it was possible to change the IPW directly in the software to lean out his 96lb injectors. There isn't a way I know of to go in and change IPW values. The closest table is injector flow rate. But just like the VE and the bi-directional controls, that too controls pulsewidth indirectly (meaning there's no table to change actual IPW values).
    Last edited by SSpdDmon; June 8th, 2006 at 06:10 AM.

  8. #8
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    By changing the ve table you are commanding the pulswidths directly.
    You are just not entering a pulsewidth in Milliseconds.
    \"You Can Never Have Enough Horsepower\"

  9. #9
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    There must be another table that helps calculate the PW. I can lean the VE table way out and the pulse width will not drop low as I need. I will try some more stuff next week when my new turbos get here. I will be doing some new tuning!!
    '71 chevelle
    Twin turbo ls1
    1000 HP 93 octane street car!
    96 lb injectors

  10. #10
    Lifetime Member SinisterSS's Avatar
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    What's your minimum pulse width set to in B4003, 4004,...?
    2009 Z06 LS7 / 2008 Sierra Denali AWD L92 6L80E
    Flashing control modules since 2001. 8-)
    Who needs a MAP sensor on a supercharged LS6 anyway.


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