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is it true?

This is a discussion on is it true? within the Firebird / WS6 forums, part of the Vehicle Specific category; is it true that a car losses performance when you put the ac on and that you should not put ...

  1. #1
    now greybat66
    Join Date
    Apr 2007
    bronx, new york

    pewter metalic
    2000 trans am conv

    is it true?

    is it true that a car losses performance when you put the ac on and that you should not put the ac if you are going faster than 80 miles per hour . Thank you.

  2. #2
    Senior Member jrc1122's Avatar
    Join Date
    Apr 2007
    Abilene, TX

    Liquid Red
    2009 Pontiac G8 GT

    I know Myth busters did a thing, that proved it Does NOT effect gas milelage, as far as performance, I dont know.

    It is actually worse to drive with the windows down, for gas mileage due to air resistance, I would assume same would ring true for performance,

    But with windows up and AC off, / Vs. windows up ac ON. I DON'T KNOW, but I too would like to know, and like to see proof.

  3. #3
    Senior Member
    Join Date
    Jul 2005
    Jacksonville, FL
    Pretty sure the PCM turns off the AC clutch at WOT. If you're just talking about cruising at 80 yeah, it takes away some HP.

  4. #4
    Member TACE02's Avatar
    Join Date
    Aug 2005

    ASC #753
    2002 Collector's Edition

    Would have to agree, PCM turns off A/C at WOT. took me a few times to realize this as I occassionally forgot to turn off A/C while running and it got a little warm in my car while running then when I got off of it the A/C kicked back on...

  5. #5
    Junior Member
    Join Date
    May 2006
    Belvidere, IL
    mythbusters revisted the ac thing and it turns out that driving with the Ac doesnt hurt ur gas mileage at about 15%

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