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Thread: A/C Idle Airflow Adjustment Table?

  1. #1
    Advanced Tuner 96gt4.6's Avatar
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    A/C Idle Airflow Adjustment Table?

    I have a conversion vehicle that i'm needing a little advice on. The car is a '79 Nova with a 6.0L Q9/65E setup. I have noticed that when my AC compressor clutch engages, the car holds or very very slowly wants to decrease in vehicle speed with no pedal input. While watching the log, I noted that my A/C Airflow adder is around 3g/sec. I was looking through the tune, and can't seem to find the table in which we can control what the throttle cracker/airflow adder is coming from. It seems all I need to do is remove just a pinch of the airflow adder for when the clutch comes on and all will be perfect with this build.

    Thank you in advance!!
    '17 Whipple'd S550
    Too many other projects to list.....see my YouTube channel for more: https://www.youtube.com/channel/UCr7...-XfDG53sCh6tcw

  2. #2
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    It's a Torque Loss table. Can't remember exactly where but you need to tell it that it's not losing as much torque because of the AC

  3. #3
    Advanced Tuner 96gt4.6's Avatar
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    Found it! Thank you so much! I will do some adjusting this evening and report back.
    '17 Whipple'd S550
    Too many other projects to list.....see my YouTube channel for more: https://www.youtube.com/channel/UCr7...-XfDG53sCh6tcw

  4. #4
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    ... Big adjustments to make a noticeable difference here. Cut it in half and try

  5. #5
    Advanced Tuner 96gt4.6's Avatar
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    Thank you for that, I was going to try 90% of OEM to start, but we'll start with 50%. I'm running a Vintage Air with the Sanden SD709 compressor. Once I got the 4.10's out back, it really takes a lot less throttle at lower speeds to maintain vehicle speed, this is when the problem really came out with the A/C clutch.
    '17 Whipple'd S550
    Too many other projects to list.....see my YouTube channel for more: https://www.youtube.com/channel/UCr7...-XfDG53sCh6tcw

  6. #6
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    Yeah. It's a lot easier to get them to drive smooth without bucking at low speeds with a gear like that because they just pull if you let it have much throttle

  7. #7
    Advanced Tuner 96gt4.6's Avatar
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    Got it. Thank you for the help! 1/2 OEM values works flawlessly, car drives like stock with clutch cycling. Pic attached in thanks for the help.

    '17 Whipple'd S550
    Too many other projects to list.....see my YouTube channel for more: https://www.youtube.com/channel/UCr7...-XfDG53sCh6tcw

  8. #8
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    No problem. Looks nice. I never seem to come across customers with swap cars like that.