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Thread: 14 GMC 6.2L BTR Cam

  1. #1
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    14 GMC 6.2L BTR Cam

    14DENALI_E92_6.2L_A6_Cam_BTR - Copy.hpt

    Did BTR Cam and have some warm start idle fluctuations. Also having driveline clunking pretty bad.

    Any help would be appreciated.

    Thanks

  2. #2
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    14DENALI_E92_6.2L_A6_Cam_BTR - Copy.hpt14DENALI_E92_PEREGRINE_6.2L_A6_STOCK_ORI.hpt

    i attached my Stock File and Modified Tune File for comparison if someone would be so kind to take a look.

    I did some tuning to TCM today using Bluecat and it has helped some. Hope I can get some more seat time to dial it in some more.

    Thank you.

  3. #3
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    14DENALI_E92_6.2L_A6_Cam_BTR _Trans_Change_SWP 1_13_19_Rev3.hpt

    Attached is TCM Tune I did with help of Bluecat. I still have plenty of clunking in driveline when I let off gas. Can't seem to get it out even with playing with torque converter lock up. Any help would be appreciated.

  4. #4
    Senior Tuner SultanHassanMasTuning's Avatar
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    would be best to post a log of your car idle /cruise
    E-tuning/remote Tuning Sultan@mastuning.net Follow @MASTUNING Contact/Whatsapp +966555366161
    [URL="http://www.mastuningsaudi.com"]

  5. #5
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    Added Log file and did some changes to tune.

    Changes from Tune from $900 Tuner...

    Lowered RPM down to 700. This fixed the drive-line "Clanging" when coming to a stop. I think it was due to torque converter engagement at that RPM. I do need to see if idle can stay just a bit more stable. It is much better than before.

    I changed a bunch of shifting times as MPH up-shift and down-shift. Also changed a bunch of torque converter lock-up and unlock.

    Changed Low, Medium, High VVT retard. Started at 3500.

    One thing I can't figure out is the light throttle 3-4 shift. The throttle closes during that shift and I want that gone completely. It is so annoying and makes the truck lunge. No reason for the throttle to close at that minimum throttle and 3-4 shift.

    Take a look and see if you anything else. My fuel trims look ok, but at lower RPM it is adding up to 10% fuel and at 3000 and up it is taking fuel away up to17/18%.
    Attached Files Attached Files

  6. #6
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    I am still getting drive line "clanging" at 7 to 10 mph coming to a stop. It feels like the lope from the cam is what you feel in drive line transitioning from cruising to stop. I have attached current tune file and stock is in thread.

    Would really appreciate some feedback from someone...
    Attached Files Attached Files

  7. #7
    Senior Tuner SultanHassanMasTuning's Avatar
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    14DENALI_E92_6.2L_A6_Cam_BTR _HPForum_test.hpt


    this is SD, get a idle log, there was alot of strange things going on...
    E-tuning/remote Tuning Sultan@mastuning.net Follow @MASTUNING Contact/Whatsapp +966555366161
    [URL="http://www.mastuningsaudi.com"]

  8. #8
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    Logs attached. Thanks
    Attached Files Attached Files

  9. #9
    Tuning Addict 5FDP's Avatar
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    I wouldn't max out all the engine TM tables if this was my tune.

    Also wouldn't disable the TM stuff in the transmission either. The upshift/downhift torque reduction tables have been disabled.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.