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Thread: 2015 TVs1900 GMC

  1. #1

    2015 TVs1900 GMC

    I am working on a 2015 1500 chvey with a TVS 1900with throttle issues.
    Cruising around you ease into and it opens up, but right after it opens up, it gets closed back to 40%.
    Ease into it some more goes up then back down to 40%
    You can be almost full pedal and still at 40%. But once you go full pedal, it opens up and stays open.

    Attached are stock file and magancharger file
    stock tune - 2015 5.3.hpt

    121214_2015_Sierra_5.3L_DI_E4769_T0599_TVS_3BAR_FG115150.hpt
    Hers -07 Jeep - SRT-8, Stock for now!
    His -05 GMC - Duramax, CCSB,4x4,LLY
    His -99 GMC - RCSB, 6.0, T-72 front mount, A/W intercooler, 4L80E, and bolt-ons

  2. #2
    Advanced Tuner
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    Driver demand maybe?

  3. #3
    Senior Tuner Higgs Boson's Avatar
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    What is your Peak Torque table set to? I can't see it on this computer.

  4. #4
    Advanced Tuner yonson's Avatar
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    DD Map B/C most likely...

  5. #5
    Advanced Tuner yonson's Avatar
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    Actually the whole DD Map needs to be calibrated... (all 3 of them)

  6. #6
    Senior Tuner Higgs Boson's Avatar
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    I see a lot of maxed out Peak Torque tables and this will really jack up the tune.

    But yes, driver demand tables can control throttle opening/closing as well.

  7. #7
    Whats a good starting point on the the DD table to change +%?
    New to this DI system. Any help appreciated.

    That tune is what Magancharger sent to me
    Hers -07 Jeep - SRT-8, Stock for now!
    His -05 GMC - Duramax, CCSB,4x4,LLY
    His -99 GMC - RCSB, 6.0, T-72 front mount, A/W intercooler, 4L80E, and bolt-ons

  8. #8
    HIggs its at 500 last 2 rows
    Hers -07 Jeep - SRT-8, Stock for now!
    His -05 GMC - Duramax, CCSB,4x4,LLY
    His -99 GMC - RCSB, 6.0, T-72 front mount, A/W intercooler, 4L80E, and bolt-ons

  9. #9
    Senior Tuner Higgs Boson's Avatar
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    what about the other rows above those? the rows are alcohol content so not really applicable below the first two....

    get your stock Peak Torque table in there and copy the second row to the other rows.

    Try that then start massaging/adjusting the curve (based on the rows not columns) to match your peak torque (wot values) at each RPM.

    After that set your Driver Demand table to your preference.

  10. #10
    Thx!
    I'll give that a try
    Hers -07 Jeep - SRT-8, Stock for now!
    His -05 GMC - Duramax, CCSB,4x4,LLY
    His -99 GMC - RCSB, 6.0, T-72 front mount, A/W intercooler, 4L80E, and bolt-ons

  11. #11
    Advanced Tuner
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    Quote Originally Posted by 06MAX View Post
    Thx!
    I'll give that a try
    Im having the same issue you were. Did you find a solution?

  12. #12
    Mostly driver demand settings
    Hers -07 Jeep - SRT-8, Stock for now!
    His -05 GMC - Duramax, CCSB,4x4,LLY
    His -99 GMC - RCSB, 6.0, T-72 front mount, A/W intercooler, 4L80E, and bolt-ons