Results 1 to 8 of 8

Thread: 6.2 Sierra - I have a few things done in the tune, anyone want to look at the log?

  1. #1
    Tuner in Training
    Join Date
    Apr 2015
    Location
    Lake Orion, MI
    Posts
    48

    Cool 6.2 Sierra - I have a few things done in the tune, anyone want to look at the log?

    I think I'm really happy with the tune at the moment, if anyone would like to give me some advise via looking at the log, that would be sweet.

    This was in cold weather pulling my two place sled trailer. Not sure where I should get more aggressive, or less.

    Thanks!truck log with snowmobiles 87 octane.hpl
    1997 Wrangler - LQ4 6.0 and 4L60e NP231C/J
    2009 Saab 9-7X with a 6.0 swapped in, 4L65E from a 2009 Suburban, 2005 trailblazer selectable transfercase, and 3.42's from trailblazer as well
    2015 Sierra 2500 Duramax with a fuel sucking emissions system
    2009 G8 GT (wifes car)

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    13,565
    Not sure what to say really, but you are logging way too many pids. It's kinda useless to log every cylinder knock retard, the computer doesnt have a knock sensor for each cylinder anyway, there are only 2 on the entire block.

    The knock doesnt suprise me, they do request that you run 91 octane from the factory in those 6.2's if I remember right. And you are pulling extra weight. Run mid grade if anything.

    Post the tune itself if you want others to maybe chime in more.
    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
    Join Date
    Apr 2015
    Location
    Lake Orion, MI
    Posts
    48
    I'll post the tune when I get home. The scanner was originally set up to find out what my hesitation was, turns out you shouldn't go over 140K miles on the O2 sensors.
    1997 Wrangler - LQ4 6.0 and 4L60e NP231C/J
    2009 Saab 9-7X with a 6.0 swapped in, 4L65E from a 2009 Suburban, 2005 trailblazer selectable transfercase, and 3.42's from trailblazer as well
    2015 Sierra 2500 Duramax with a fuel sucking emissions system
    2009 G8 GT (wifes car)

  4. #4
    Tuner in Training
    Join Date
    Apr 2015
    Location
    Lake Orion, MI
    Posts
    48
    Bretts 09 Sierra - 1 - With DFCO 2.1.hpt

    Here is the current tune I'm running.

    Yes, the L9H engine recommends premium. Not once have I noticed a gain. I really just wanted to make it run the best on regular.
    1997 Wrangler - LQ4 6.0 and 4L60e NP231C/J
    2009 Saab 9-7X with a 6.0 swapped in, 4L65E from a 2009 Suburban, 2005 trailblazer selectable transfercase, and 3.42's from trailblazer as well
    2015 Sierra 2500 Duramax with a fuel sucking emissions system
    2009 G8 GT (wifes car)

  5. #5
    Advanced Tuner
    Join Date
    Jan 2006
    Location
    Collinsville IL
    Posts
    697
    The octane matters trust me. It's a 10.5:1 compression engine.
    https://www.facebook.com/tuningbyshanehinds
    [email protected]
    2009 G8 GT [email protected] 1.60 - Sold
    2008 A6 LS3 C6 Cammed [email protected] 1.44 Sold
    2013 CTSV wagon 9.21@151
    2015 C7Z bolt ons 10.0

  6. #6
    Potential Tuner
    Join Date
    Dec 2009
    Location
    West Portsmouth, Oh
    Posts
    4
    I have a 6.2 truck and tried a 87 tune when I took a long trip, all it did was ping and felt underpowered, stuck the 93 tune back on it and it felt normal again. It makes a world of difference.
    2004 GMC Sierra RCSB, 6.0 H/C/I , A4, Tru-trac, 4.10s
    1991 Chevrolet Silverado ECSB, Forged Brodix/N2O 355 w/ T56, Motive Gear 3.73s, Auburn Posi Unit.

  7. #7
    Advanced Tuner
    Join Date
    Jan 2006
    Location
    Collinsville IL
    Posts
    697
    Quote Originally Posted by SilverSierra04 View Post
    I have a 6.2 truck and tried a 87 tune when I took a long trip, all it did was ping and felt underpowered, stuck the 93 tune back on it and it felt normal again. It makes a world of difference.
    Bingo!

    Yea i only run 93 in mine
    https://www.facebook.com/tuningbyshanehinds
    [email protected]
    2009 G8 GT [email protected] 1.60 - Sold
    2008 A6 LS3 C6 Cammed [email protected] 1.44 Sold
    2013 CTSV wagon 9.21@151
    2015 C7Z bolt ons 10.0

  8. #8
    Tuner in Training
    Join Date
    Apr 2015
    Location
    Lake Orion, MI
    Posts
    48
    I completely agree on the compression ratio. I really haven't tweaked anything in the high octane table, so that's one of the reasons for no "feel" or "butt-dyno" difference, as well as no MPG change.
    1997 Wrangler - LQ4 6.0 and 4L60e NP231C/J
    2009 Saab 9-7X with a 6.0 swapped in, 4L65E from a 2009 Suburban, 2005 trailblazer selectable transfercase, and 3.42's from trailblazer as well
    2015 Sierra 2500 Duramax with a fuel sucking emissions system
    2009 G8 GT (wifes car)