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Thread: Cold air intake

  1. #1

    Default Cold air intake

    What does a cold air intake actually do to the performance of the motor?? Sorry, not a gear head
    :great:Semper FI

    2008 Vortec 6.0 LT Z-71
    2500 HD "BIG BOY" Truck
    Stealth Grey Metallic
    Volant Cold Air Intake
    Line X Bed liner
    265 75 R16 Michelin LTX M/S2 ORWl
    Chrome step bars
    Fog lights
    3M clear shield hood protector
    Putco over sized boss locker side rails 2 1/2"
    Truxedo Low Pro QT Tonneau Cover

  2. #2


    The cooler the air is, the denser it is which is better for performance. The under hood air is hotter, from the engine heat, and is thinner. Hope that helps.

    2010 Z/71 Colorado C/C
    Black 4X4 w/5.3L V8
    2007 Winnebago Adventurer
    w/8.1L Chevy & Allison 6spd.
    Canyon Lake, Texas

  3. #3


    The theory is that the CAI kit will pull outside "cooler" air, usually through the fender, rather than the hot engine compartment air. I think starting with the Vortec in 96, the stock induction system does the same thing. Some CAI kits are also have smoother, and sometimes larger, piping. This reduces restriction of airflow to the motor. I think if you have a 95 or older you might see a slight difference in performance across the board. With 96 and up, I think the only place you would see/feel a difference is WOT. My experience with a CAI was overall not good. Didn't feel any significant performance change, and the noise was very annoying. The stock induction has baffles which absorb a significant amount of noise. So, no more CAI for me. And unless you have your foot to the floor all the time, I wouldn't recommend one.
    When you hear hoofbeats, look for horses not zebras.

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