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Thread: INJ Duty droping to 0 on shifts.

  1. #1
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    INJ Duty droping to 0 on shifts.

    Every shift in WOT the injector duty cycle drops to 0, anyone seen this or have fix?
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  2. #2
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    i have the same isse

  3. #3
    Surprised to see that the truck appears to be in closed loop the entire time its at WOT! (based solely on active STFT's and fluctuating o2 mv)

  4. #4
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    That its right ^^^

    Will have to check if its going in PE, I was focusing on the injector shutting down and did not pay attention to that.

  5. #5
    Senior Tuner SultanHassanMasTuning's Avatar
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    make a status bit for WOT and PE,

    for trucks usually have to lower the PE throttle mapping to enter PE i think stock its set to 87, bring down to like 50
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  6. #6
    if you are going to max out the Peak engine torque and still use torque for PE enable it will never go into PE since you will never reach that torque level

  7. #7
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    x2 if you max out peak you will never go into power enrichment,,,, your having issues when it shifts you havent got rid of the delay where timing drops?
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  8. #8
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    ^^^Timing don't drop no more, just the injector duty cycle drops on shifts.

    I was not going to max out the the max torque peak but i did just see if the inj duty cycle will go away.
    Last edited by 02Ls1; 11-18-2014 at 01:16 PM.

  9. #9
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    are you going into power enrichment ? how are the o2 sensors when you shift ??
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  10. #10
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    Quote Originally Posted by jarrah View Post
    if you are going to max out the Peak engine torque and still use torque for PE enable it will never go into PE since you will never reach that torque level
    You ralking about this table?

    If i max out peak engine torue should i disable the enable power enrichment?
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  11. #11
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    Quote Originally Posted by Joshtuning View Post
    are you going into power enrichment ? how are the o2 sensors when you shift ??
    The only scan i have on shifts the (mV) of the o2 they go to 0 or 4 (mv)

  12. #12
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    just took a look at your tune and log you have your peak maxed out and you are not going into pe which means your not really making any power
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  13. #13
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    inserting the air fuel ratio commanded hi res in the table display will let me know if i enter in power enrichment?

  14. #14
    Senior Tuner Ben Charles's Avatar
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    02LS1 you need to becareful, your playing with fire

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  15. #15
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    look at your O2 sensors when regular driving o2 sensors should be bouncing once you floor it o2 sensors should go up without bouncing and should go back to bouncing when you let go actually it goes to O cuz its a 2014
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    Made some changes on the file, Now the ruck goes on PE and feels way better.

    I change back to stock the maximum peak and got PE at WOT.
    What makes it not get PE when maxing the maximum peak torque?
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  17. #17
    Senior Tuner Ben Charles's Avatar
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    There is A LOT that needs to be fixed in that tune.

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  18. #18
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    What else I need to fix?
    I'm learning and will like to know.
    This truck it's just a stock with a muffler.
    I'm not asking for a tune for this truck that's why I bought hptuners to learn, but will like to know what you see wrong here so I can fix it and have something right.
    Last edited by 02Ls1; 11-21-2014 at 09:24 PM.