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Thread: Add fuel above 4000 rpm

  1. #1
    Potential Tuner
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    Add fuel above 4000 rpm

    Hey guys new to tuning,been doing a lot of reading. Can some one tell me the best way to add 5% fuel above 4000 rpm?s in my 1999 c5. It about 13.2/13.3 and want to be more around 12.8.

  2. #2
    Tuning Addict 5FDP's Avatar
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    Is the wideband reporting 13.2-13.3 but the commanded AFR is still 12.8??

    Without seeing how your tune is setup and seeing a log file, that is why I asked.

    Fuel is added in the MAF and VE tables depending on which portion you are tuning and how it's all setup.
    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
    Senior Tuner
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    ECM 12400

    Fuel> power enrich> EQ ratio (gas)

    You increase to add fuel,decrease to remove.


    13.3should be like 1.1

    12.8 should be like 1.15

    Best way to add 5% is to command 5% more.
    Last edited by murfie; 06-04-2022 at 01:11 PM.

  4. #4
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    Quote Originally Posted by murfie View Post
    ECM 12400

    Fuel> power enrich> EQ ratio (gas)

    You increase to add fuel,decrease to remove.


    13.3should be like 1.1

    12.8 should be like 1.15

    Best way to add 5% is to command 5% more.
    Thanks man that helped.