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Thread: 2008 Chevy Silverado 5.3 header tuning tips With o2 sensors

  1. #1
    Tuner in Training
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    Oct 2022
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    Talking 2008 Chevy Silverado 5.3 header tuning tips With o2 sensors

    i recently installed some headers on my 08 5.3 i would like to know any advice that can help me on learning how to tune for my headers along with the oxygen sensors any help would be really appreciated i am a beginner tuner just looking for some advice

    currently only has headers

  2. #2
    Tuning Addict 5FDP's Avatar
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    May 2012
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    With many headers, you don't have to do anything.

    You can watch your fuel trims in closed loop to see how positive or negative they are and make minor adjustments to the fueling there. Any full throttle tuning will require a wideband oxygen sensor to dial in that stuff.

    Wouldn't be a bad idea to lower some of the thresholds for power enrichment and commanded a slightly leaner air fuel ratio once you have a wideband.
    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
    Tuner in Training
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    thanks for the advice man really helped allot !!!!