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Thread: 14 GT VMP twin 69 cutting/surging

  1. #1
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    14 GT VMP twin 69 cutting/surging

    I've got a 2014 gt mustang with a vmp 2650 and twin 69. I know the twin 69 even per vmp should use the gt500 tb tables. Problem I've got is I can hold constant throttle and it goes from closed to part throttle and surges really bad while it's doing this. I can put the wrong throttle tables in and it will drive better, but still surge under really light throttle.

    Anywhere in the logs where throttle is held steadily and barely applied while holding higher rpms you can see the map and maf jumping. I've gone as far as making dd tables the same, changing cam tables, trying different throttle maps with different decel settings to the point of killing dfco. Going in circles here. Really wondering if something isn't up with the pedal itself since it doesn't change at all while the throttle is going into closed and part throttle settings.

    Any help is greatly appreciated.
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    2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
    2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80

    ~Greg Huggins~
    Remote Tuning Available at gh[email protected]
    Mobile Tuning Available for North Georgia and WNC

  2. #2
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    In this one you can see around 3;27 timeline
    Attached Files Attached Files
    2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
    2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80

    ~Greg Huggins~
    Remote Tuning Available at gh[email protected]
    Mobile Tuning Available for North Georgia and WNC

  3. #3
    Senior Tuner SultanHassanMasTuning's Avatar
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    did you try the twin 65mm setting
    Follow @MASTUNING visit www.mastuned.com
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  4. #4
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    Quote Originally Posted by SultanHassanMasTuning View Post
    did you try the twin 65mm setting
    Not sure i have the tables for that one?

  5. #5
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    Pretty sure I have it fixed now. Happened to remember when I was driving down this morning that I had one almost identical to this that I had tuned several years back where I made my own throttle tables and everything. So far everythings fixed and she runs pretty good. I had to change throttle, ve, timing, cam, dd and some of the torque tables, but she's good now. If anyone wants it, here it is with last log. Don't recommend this timing in yours as this is kind of a unique setup...
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    Last edited by GHuggins; 01-05-2022 at 10:21 PM.
    2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
    2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80

    ~Greg Huggins~
    Remote Tuning Available at gh[email protected]
    Mobile Tuning Available for North Georgia and WNC