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Thread: LNF Injector Duty Cycle % & Pulse Width ms

  1. #1
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    LNF Injector Duty Cycle % & Pulse Width ms

    Hello, I know this has most likely has been posted here before. Did some digging and could not find the answer to my question. So here it is.

    What duty cycle %/ injector pulse width ms is the max the direct injection injectors should be pushed to?

  2. #2
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    Well from my experience with DI motors thus far and from some reading and studying it appears that as a general rule of thumb you don't want to really go much past around the 40% mark. If I remember correctly based on the way the scanner calculates it about 50% duty cycle is the max.
    2017 Silverado LTZ

  3. #3
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    Cool deal, thank you very much for that information. I was just tuning on a LNF, it was hitting 30%. Fuel pressure was still holding strong. So was just curious.

  4. #4
    Senior Tuner cobaltssoverbooster's Avatar
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    watch ms on the direct injected cars. depending on phasing they max between 6.8-7.2 ms
    2000 Ford Mustang - Top Sportsman

  5. #5
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    Thank you, good to hear. I was hitting 5.2-5.5 ms

    Thank you for the information.