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Thread: injectors maxed out?

  1. #1
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    injectors maxed out?

    WOT.PNG

    What is the max duty cycle you can safely and reliably run? And, at what percent duty cycle do you need to be looking at getting bigger injectors? I would like to redline at 7k all day if I choose to do so.

    Thanks

  2. #2
    Tuning Addict 5FDP's Avatar
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    I'd be stopping at around 90% or so.

    But from the screen shot you are running that engine pretty rich with a commanded AFR around 11.6, if you leaned that out your duty cycle would drop a good amount.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
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    Good to know. What target AFR would you shoot for with a NA car at WOT? Somewhere around 12.8?

  4. #4
    Tuning Addict 5FDP's Avatar
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    That really depends, so it's hard to say.

    If you're going to beat the piss out of it all the time then run it richer in my opinion. Like 12.3-12.5.

    Obviously using a dyno would be best but most don't have one. But going from a 11.6 to a 12.3 will free up a little duty cycle.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  5. #5
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    Hey man I appreciate the info.