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Thread: HUMMER H2 Crackle, Pops

  1. #1
    Tuner in Training
    Join Date
    Aug 2020
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    10

    HUMMER H2 Crackle, Pops

    Hello everyone,

    I have read a lot of threads on how to do pops and bangs but not sure what to do exactly.

    I have 04 H2 LQ4 6.0 Cats removed with Borla Exhaust

    Below is the Engine->Fuel Tab in my VCM editor:
    Engine-Spark-Advance.png

    Where exactly shall I click and what values I have to change in order to get moderate pops?

    I know I shall change spark timing but I don't want to mess up with incorrect values in incorrect locations.

    Thanks in advance.

  2. #2
    Tuner in Training
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    Aug 2020
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    10
    Whats up guys, can't get help from anyone?

  3. #3
    Advanced Tuner
    Join Date
    Mar 2020
    Posts
    380
    Crackles and pops don't come from your fuel table, they come from reduced timing in the high rpm/low load tables (The first 3 rows from say 2000 up to around 4000 to 4500 rpm)..... Reduce the timing in that area down to around 10 degrees. It will probably pop a lot there. Add timing for less pops

  4. #4
    Advanced Tuner
    Join Date
    Mar 2020
    Posts
    380
    email me your tune file if you want help
    [email protected]

  5. #5
    Tuner in Training
    Join Date
    Aug 2020
    Posts
    10
    Thanks a lot, David, I appreciate your help.

    I will send you the tune so I can compare it with the one I have in order to tell the differences.