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Thread: 2017 Mustang Procharged H.O. Idle

  1. #1
    Tuner in Training
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    2017 Mustang Procharged H.O. Idle

    I am wondering if someone can take a look at my log and tune and give me any feedback on my idle if it is behaving correctly. My idle was hunting, but now I think I'm close to having it smoothed out. I adjusted torque in MP01 by raising it 12lbs in the top row. That seemed to stabilize idle quite a bit. Spark used to swing back and forth roughly from 15*-30* consistently. I adjust Borderline in the 750 column where i have the Idle set to in tables 00, 01, 02. I know these tables blend together at times so this is why I adjusted those three. It still has minor stumbles but seems to smooth out for the most part. I have attached OEM Calibration as well to compare if needed. Thanks.
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    Last edited by Rare5spd; 07-23-2019 at 05:12 PM.

  2. #2
    Tuner in Training
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    Can someone tell me where the stock timing should be at idle?

  3. #3
    Tuner in Training
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    Any help would be much appreciated. Thank you.

  4. #4
    Senior Tuner veeefour's Avatar
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    Idle is torque controlled so spark at idle can vary form max in BASE N which is usually set to 55-ish all the way down to min. low load spark typically -20.

  5. #5
    Tuner in Training
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    Thank you for the reply Veeefour. The wide range of Idle spark was not what I was looking for. I was looking to see what Idle reads for a factory car when it is up to operating temp. I wanted to compare what mine is currently idling to a factory car. A buddy of mine put a scanner on his friends mustang. Its about 7-8*. I'm not too far off.

  6. #6
    Advanced Tuner
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    Your idle spark will always be changing, as these setups use variable ign timing to control idle speed, along with airflow control.