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Thread: Throttle percentage with WOT drops to 55%

  1. #1
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    Throttle percentage with WOT drops to 55%

    e38 ecm throttle percentage is oscillating like it is torque limited. At WOT it shows 100% on pedal but in the log it is going up and down. It is throwing off the fueling and pe during the pull. I have turned off all the torque limiters i know of. have searched for more and found one in the transmission tune. Turned that off and it still cuts it out. What else acts as a limiter for it?
    Also turned off traction control in the tune. yes at the end it goes to 14.3 instead of commanded ratio. will work on that part after I figure out the torque limiting or whatever it is.

    1969 chevelle step 4.0.2 torque stuffs.hptworse.hplScreenshot 2025-06-25 143507.png I have the log and tune and picture on here.

  2. #2
    Senior Tuner
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    There are still lots of torque limiters here

    try this
    1969 chevelle step 4.0.2 torque stuffs try this.hpt
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  3. #3
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    Thank you Alvin. I just bumped it all up and should have almost maxed it out. I didnt know it would make a difference on the one in transmission for torque stall. out of 175 tunes I dont guess i have come across that yet. Thanks again.

  4. #4
    Senior Tuner Cringer's Avatar
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    Quote Originally Posted by Alvin View Post
    There are still lots of torque limiters here

    try this
    1969 chevelle step 4.0.2 torque stuffs try this.hpt
    Should he also set [ECM] 2869 - Delivered Torque Max back to stock? Right now it is 6,000 lb-ft.

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  5. #5
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    I would.. but its a swap so it doesn't matter.
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