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Thread: Differences with 50/50 timing and 20/20 tune LLY

  1. 05-01-2025 #1
    HPLLY58
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    Differences with 50/50 timing and 20/20 tune LLY

    What are the differences you get changing stock timing on a 20/20 tune.
    Last edited by HPLLY58; 05-01-2025 at 08:40 AM.
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  2. 05-01-2025 #2
    04silverado6.0
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    More power, less smoke, more cylinder pressure, cooler exhaust.
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