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Thread: 2002 GMC 4.8 stage 2 cam tune file for comparison

  1. #1
    Tuner in Training
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    Jan 2017
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    2002 GMC 4.8 stage 2 cam tune file for comparison

    Hello, I'm working on a 2002 GMC with a stage 2 Texas Speed cam, air intake, exhaust. Stock header and catalytic converters. I started with an SD tune, but I believe the tune file isn't set up properly. Looking to see if anyone here can share a tune of a similar setup to compare. Doesn't have to be SD, maf works well. Thank you in advance

  2. #2
    Tuning Addict 5FDP's Avatar
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    May 2012
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    Rogers, MN
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    I don't have a tune but all you need to do for speed density and set the MAF fail high to 0hz and have the 3 MAF dtc's set the MIL on first error.
    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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    Jan 2017
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    Yeah, I'm aware of MAF fail procedures, thank you. I'm more curious about idling timing and fuel curves, to see where most people set their tune at. I have a wideband on the truck, so I'm capable of adjusting to fit