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Thread: 2007.5 6.7 Cummins 200% Over Injector Starting Point

  1. #1
    Tuner in Training
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    2007.5 6.7 Cummins 200% Over Injector Starting Point

    Hey everyone I am putting 200% over injectors in my personal truck that I tune. I have never tuned injectors this large. I am hoping someone would be willing to give me help on a starting point for pulse width. I use efi live on this truck but no one has responded on the forum there. Seem to have much more help on this side of the tuning software forums.

  2. #2
    what injectors are you using? part number and brand? sometime google will give you the flow charge and volt refence.

  3. #3
    Senior Tuner Jim P's Avatar
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    Voltage reference? Not on these engines.

  4. #4
    Senior Tuner Jim P's Avatar
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    A snappy google search quickly turns up the following on S&S 200% over injectors:

    mPa/uSecond/mm3
    180/2800/518.10
    180/1350/232.50
    180/260/2.95
    140/600/41.62
    30/800/5.61

  5. #5
    The rest of your setup will really dictate how much pulse you can run. I'd start with around 1375uS.