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Thread: s550 roush 2 twin 67 throttle to touchy

  1. #1

    s550 roush 2 twin 67 throttle to touchy

    does anyone have any info on the twin 67mm throttle body used on a roush 2?
    I'm having issues with the car being very touchy when trying to accelerate with a third throttle or so; it's almost 15% or 50%+ throttle at very light pedal.
    I used data from the roush truck file that also has the twin 67mm throttle but no luck ive also played with the accelerator pedal position vs pedal output and lowered it a lot under 70%.
    going to try and raise the effective area up and see what happens.
    the car has a 72mm pulley on it.

  2. #2
    Advanced Tuner 15PSI's Avatar
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    I have the specs for the VMP 67 twin. If that is the same TB, I can send you the data. Also, it would be helpful if you could post the tune.
    2012 Mustang GT with S/C
    4Runner with S/C
    Turbo/NOS Hayabusa - 320RWHP

  3. #3
    here is the f150 tb data I used
    Attached Files Attached Files

  4. #4
    Advanced Tuner 15PSI's Avatar
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    67mm Twin TB Values

    Assuming your 67mm Twin TB is the same one which is manufactured by C-F-M and resold by VMP and others, here are the values I use. They are different from your values.

    TB.png
    2012 Mustang GT with S/C
    4Runner with S/C
    Turbo/NOS Hayabusa - 320RWHP

  5. #5
    that's for a s197 it looks like. I'm looking for the rest of the data on a s550 pcm

  6. #6
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    Quote Originally Posted by limitless View Post
    that's for a s197 it looks like. I'm looking for the rest of the data on a s550 pcm
    You can use that data as well, the s550 has a higher resolution AKA extra columns, how ever you can make the column past the s197's all identical. There are plenty of examples of this being done all over the stock tune too when there is too many columns or rows than what is actually used/needed

  7. #7
    Advanced Tuner 15PSI's Avatar
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    They are the same. As Jn2 stated, just extend the columns.
    2012 Mustang GT with S/C
    4Runner with S/C
    Turbo/NOS Hayabusa - 320RWHP