Page 2 of 2 FirstFirst 12
Results 11 to 18 of 18

Thread: Engine Reduced Power Help!

  1. #11
    Member TorqueMonster007's Avatar
    Join Date
    Aug 2013
    Posts
    83

    Default

    Correct. Do not believe it was ever software related but more of me over looking something more than likely. Will post factory and modified files in the morning once i am back to my computer. Thanks
    2024 3500HD (SRW) Duramax Denali Reserve
    2021 Ram 4500 Limited (Horse Hauler)
    2016 LML 2500HD Duramax High Country with a little help
    2022 Yukon Denali

  2. #12
    Member TorqueMonster007's Avatar
    Join Date
    Aug 2013
    Posts
    83

    Default Tune Files

    Here is the stock file and the modified files


    2016 GMC ECM_Factory.ctz

    2016 GMC ECM_Tuned_TQModel_MapCorrections_12-8-16.ctz

    Let me know what/if you find anything

    I have narrowed it down to the ECM not TCM tune.
    2024 3500HD (SRW) Duramax Denali Reserve
    2021 Ram 4500 Limited (Horse Hauler)
    2016 LML 2500HD Duramax High Country with a little help
    2022 Yukon Denali

  3. #13
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    Ok, I'll look in your file.

  4. #14
    Member TorqueMonster007's Avatar
    Join Date
    Aug 2013
    Posts
    83

    Default

    I have found a crack where I stripped the threads on the PCV fitting that the fitting is basically just hanging leaving an exposed hole between the MAF and Throttle body. Could this be the culprit with the MAF getting a false reading at key-on?
    2024 3500HD (SRW) Duramax Denali Reserve
    2021 Ram 4500 Limited (Horse Hauler)
    2016 LML 2500HD Duramax High Country with a little help
    2022 Yukon Denali

  5. #15
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    At key on, that should not cause any problem... but during engine run that will cause problems.

  6. #16
    Member TorqueMonster007's Avatar
    Join Date
    Aug 2013
    Posts
    83

    Default

    Is the truck somehow just recognizing a flash?
    2024 3500HD (SRW) Duramax Denali Reserve
    2021 Ram 4500 Limited (Horse Hauler)
    2016 LML 2500HD Duramax High Country with a little help
    2022 Yukon Denali

  7. #17
    Member TorqueMonster007's Avatar
    Join Date
    Aug 2013
    Posts
    83

    Default

    Only other reasons I can think of that may be the problem.

    1- Between the time I read the stock file and flashed the modified one I updated my V2?

    2- I did not disconnect the negative on the battery when I removed the MAF and it is a reoccurring fault?

    **I flashed the modified file right after using V8 but I thought like with v7.5 it cleared the DTCs whenever it rebooted the ECM?**
    Using the scan tool couldn't find a DTC

    Only other thing I know to do is put factory intake back on and factory files back in and drive it a few days, then re-read the factory files and create new modified files but will base the values off the files I had already built.
    2024 3500HD (SRW) Duramax Denali Reserve
    2021 Ram 4500 Limited (Horse Hauler)
    2016 LML 2500HD Duramax High Country with a little help
    2022 Yukon Denali

  8. #18
    Lifetime Member
    Join Date
    Mar 2009
    Posts
    259

    Default

    Maybe try working on a few changes at a time to identify which one is causing reduced power.
    00 Silverado Z71, LQ9 w/ LS3 heads, BTR cam, Whipple 2.9@8#, 4l80E

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Reduced Engine Power mode help
    By JUSTASBC in forum Petrol / Gas
    Replies: 52
    Last Post: July 15th, 2012, 12:46 PM
  2. Reduced Engine Power help please
    By JUSTASBC in forum Petrol / Gas
    Replies: 3
    Last Post: August 25th, 2011, 11:55 PM
  3. Reduced engine Power
    By Webbs in forum Gen III V8 Specific
    Replies: 9
    Last Post: February 3rd, 2011, 08:18 AM
  4. reduced engine power can't be shut off
    By 496chevy in forum Custom Operating Systems
    Replies: 2
    Last Post: May 31st, 2009, 12:02 PM
  5. Reduced engine power
    By redlinepd in forum Forced Induction and Nitrous Oxide (N20)
    Replies: 3
    Last Post: July 7th, 2007, 07:30 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •