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Thread: Urgent Speed Limiter Help!

  1. #1
    Tuner in Training
    Join Date
    Dec 2017
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    21

    Urgent Speed Limiter Help!

    I'm putting the car on the dyno tomorrow and need to raise the speed limiter so i can do the pulls in 5th. Its a 2017 Mustang GT Manual. Its running a 3.55 rear end so i know it will hit the speed limiter before the rev limiter in 5th.

    Is it as simple as going in to SPEEDO > LIMITER > VSS LIMIT ETC and raising it to 255mph, or do i also need to fiddle with the MAXIMUM SPEED tab below it and change the speeds in there?

    I tried changing the values but it prompts me with a warning about the value being outside the max/min and that it can put my module in an unrecoverable state. Just want to be sure before i screw something up!

    Any help please?!?! Thanks!

  2. #2
    Senior Tuner SultanHassanMasTuning's Avatar
    Join Date
    Nov 2009
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    Jeddah, Saudi Arabia
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    2,144
    on the newer ford PCM there is 2 tables VSS limit ETC stock is usually 155 raise to 210 you will also have a table under it that has the same speed limit high light all and raise to 210
    E-tuning/remote Tuning Sultan@mastuning.net Follow @MASTUNING Contact/Whatsapp +966555366161
    [URL="http://www.mastuningsaudi.com"]

  3. #3
    Tuner in Training
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    Dec 2017
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    Awesome!! Thanks!!!

  4. #4
    Advanced Tuner
    Join Date
    Sep 2010
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    862
    Tri-Core ECMs require you to apply the speed patch to exceed 186mph

    OS>speed limiter patch - Enabled

  5. #5
    Tuner in Training
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    Dec 2017
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    Haven't had a chance to play with this yet, but how do i know if i've got a tricore ECM?