2.0T Turbo Lag and Torque Management - Page 2
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Cadillac ATS Technical Discussion Forum Discussion, 2.0T Turbo Lag and Torque Management in Cadillac ATS Discussion Forums; Originally Posted by Ragtop 99 84% is WOT with this sensor measurement. Why 84% max on this measurement, I don’t ...
  1. #16
    TORQUE SOUTH Tuning's Avatar
    TORQUE SOUTH Tuning is offline Cadillac Owners Member
    Automobile(s): past '07 CTS Premium 3.6, currently tuning several ATS 2.0Ts
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    Re: 2.0T Turbo Lag and Torque Management

    Quote Originally Posted by Ragtop 99 View Post
    84% is WOT with this sensor measurement. Why 84% max on this measurement, I don’t know.
    You selected the SAE.TP PID in your log. Use GM.ETCTP as the PID for 100% WOT.

  2. #17
    Ragtop 99's Avatar
    Ragtop 99 is offline Cadillac Owners Enthusiast
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    Re: 2.0T Turbo Lag and Torque Management

    I'm still curious why SAE is 84% and not 100%. I saw the other PID, just haven't bothered to update my config file. For curiosity, I went and loaded every TPS related PID to see what they did.

  3. #18
    TORQUE SOUTH Tuning's Avatar
    TORQUE SOUTH Tuning is offline Cadillac Owners Member
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    Re: 2.0T Turbo Lag and Torque Management

    Quote Originally Posted by Ragtop 99 View Post
    I'm still curious why SAE is 84% and not 100%
    It's showing the status of the Throttle Position Sensor, not the pedal. They left some room in the sensor for calibration, manufacturing differences in sensors and whatnot. If it hits 0 or 100% it'll set a fault. It's for rationality / diagnostic test purposes. Your throttle blade is open fully at 84% TPS.

  4. #19
    Ragtop 99's Avatar
    Ragtop 99 is offline Cadillac Owners Enthusiast
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    Re: 2.0T Turbo Lag and Torque Management

    My corvette is the same way, SAE TPS reads maybe 88% at WOT. The rationale for the fault sensors at 0% and 100% make sense.

    While I assume it is correct, I've never played with the ETC opening area. I could see GM using a number less than actual to effectively limit how far the throttle blade opens. Can't trust those guys not to mess with us in strange ways.

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