GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Page 1 of 3 123 Last Post byLast Post by
Results 1 to 10 of 27
  1. #1
    Sr. Engineer
    Join Date
    Jun 2009
    Location
    San Diego, CA
    Posts
    426

    Post How to shop for an intake

    There are three different types of intakes:

    Closed Box (ie. Volant, Outlaw)
    Open Element (ie. AEM, K&N FIPK)
    Drop In filter (ie. K&N)

    When looking at manufacturers claims, one shouldn't just look at the HP numbers:

    You need to look at the highest average airflow which is directly related to torque (subsequently HP).

    Manifold pressure (MAP) is a measurement of restriction, the higher the number the less restriction, so this is another big point.

    IAT (Intake Air Temp) recovery is another big factor in narrowing down a good intake.

    Closed box intakes do better at lower speeds as there won't be as much of a heat soak issue. The open elements use metal shields which absorbs heat (heat soak).

    The open element intakes drop temperatures a lot quicker at higher speeds which in turn creates denser air. The denser air allows for more airflow, which then of course makes more power.

    This all being said, intakes (as well as exhausts) are a matter of personal preference, just taking off the stock tube takes off a lot of restriction. Realistically, the differences between intakes (ie. open vs. open and closed vs. closed) will be minimal. One thing I do encourage anyone who purchases an aftermarket unit to do, is check the fitment every couple hundred miles, these things find a way to wiggle loose and can cause a drop in performance as well as MPG.
    Black Bear Performance- Custom Tuning Solutions

    Authorized EFILive and MAGNACHARGER seller

  2. #2
    Jr. Engineer
    97chevz71's Avatar
    Join Date
    May 2009
    Location
    Perry County, Pennsylavania
    Posts
    235

    Default

    Will check mine thanks

  3. #3

    Default

    Quote Originally Posted by JennaBear View Post
    There are three different types of intakes:

    Closed Box (ie. Volant, Outlaw)
    Open Element (ie. AEM, K&N FIPK)
    Drop In filter (ie. K&N)

    When looking at manufacturers claims, one shouldn't just look at the HP numbers:

    You need to look at the highest average airflow which is directly related to torque (subsequently HP).

    Manifold pressure (MAP) is a measurement of restriction, the higher the number the less restriction, so this is another big point.

    IAT (Intake Air Temp) recovery is another big factor in narrowing down a good intake.

    Closed box intakes do better at lower speeds as there won't be as much of a heat soak issue. The open elements use metal shields which absorbs heat (heat soak).

    The open element intakes drop temperatures a lot quicker at higher speeds which in turn creates denser air. The denser air allows for more airflow, which then of course makes more power.

    This all being said, intakes (as well as exhausts) are a matter of personal preference, just taking off the stock tube takes off a lot of restriction. Realistically, the differences between intakes (ie. open vs. open and closed vs. closed) will be minimal. One thing I do encourage anyone who purchases an aftermarket unit to do, is check the fitment every couple hundred miles, these things find a way to wiggle loose and can cause a drop in performance as well as MPG.
    Thanks for clarifying that for us!
    Jim

    2004 SILVERADO 2500HD LS
    Pro Comp Leveling Kit
    285-75-16 Cooper ST All Terrains
    Pro Comp Programmer
    Bilstein Shocks
    Linux Bed Liner
    Tinted Windows



    Other rides:

    1967 Landcruiser <350 Chevy>
    1970 Camaro
    1990 Geo Metro Convertible
    2007 FJ Cruiser

  4. #4
    Legend

    Join Date
    Aug 2008
    Location
    East of Branson, Missouri
    Posts
    2,788
    Blog Entries
    14

    Default

    Awesome information. I don't think I've ever read what the differences are between the CAIs. Thanks!
    Steven



    "The Sarge"
    1999 Chevy Suburban LT- K2500
    7.4 454 Vortec, 4WD
    305/70/16 on Eagle Alloy




  5. #5

    Default

    Good post Jenna. This should help out the nooblets shopping for a CAI. I personally think this should be a sticky!!!!!
    2005 Chevy Silverado Z71 in Black

    6" BDS Suspension Lift | 3" BDS Body Lift |17" Rock Crawler Stellies | 35" Cooper STTs | 4.56 Yukon Gears | AirAid CAI and TBS | Flowmaster 40s | HyperPAC Programmer


    2001 TJ Sahara in Sienna

    3.5" RE Suspension Lift | 33x12.50 Baja MTZs | D30/44 | ROKMEN Merc Front Bumper | Warn Rockcrawler Rear w/ Carrier | Warn M8000 Winch



  6. #6
    Legend bry2500's Avatar
    Join Date
    Oct 2008
    Location
    Gloucester, MA
    Posts
    2,201
    Blog Entries
    4

    Default

    Great info!!!!! I second the Sticky
    BRYAN

    "IF YOU DON'T TREAT IT LIKE A TRUCK IT'S JUST A REALLY BIG CAR"

    02' Avalanche 2500 Onyx Black
    8.1L Vortec
    43,000 miles

  7. #7

    Default

    good info on intakes
    2000 GMC Sierra Ext. Cab 5.3L

  8. #8
    Sr. Engineer
    Join Date
    Jun 2009
    Location
    San Diego, CA
    Posts
    426

    Default

    Thanks guys, I hope this will help folks out in their quest for a new intake!

  9. #9
    Legend 2ToNe04's Avatar
    Join Date
    Apr 2009
    Location
    Fresno California
    Posts
    1,030
    Blog Entries
    1

    Default

    they should sticky the tbs thread and cai thread and the others.

    Inform those who dont know yet

    2004 4.8| Custom Paint| Tint| De-badged| Shaved Tailgate| Rollpan| Smoked Tails| Color Matched| Lowered 5/8| Suede Interior| Color Matched Interior| Indash & TVs| Mids-Lows & 2 12" CVRs| 500 & 1100 Interfires| Soundeadener| Outlaw CAI| Magnaflow|
    Future Mods: 6.0 LQ4/9| Bags|

  10. #10
    Sr. Engineer
    Join Date
    Jun 2009
    Location
    San Diego, CA
    Posts
    426

    Default

    Thanks guys, we tested a bunch of intakes on the dyno paying close attention to all the above mentioned factors. If you have any questions, you know where to find me!

Page 1 of 3 123 Last Post byLast Post by

Similar Threads

  1. how much would a 4x4 shop charge me
    By 87burb in forum General Chevy & GM Tech Questions
    Replies: 2
    Last: 08-23-2009, 11:51 PM
  2. Best shop manual?
    By wvucoalminer in forum General Chevy & GM Tech Questions
    Replies: 3
    Last: 04-14-2009, 10:39 PM
  3. Shop Truck
    By Crunch in forum Photo & Video Gallery
    Replies: 7
    Last: 05-12-2008, 12:40 PM
  4. Shop Manual
    By cchas14 in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 2
    Last: 02-12-2008, 04:56 AM
  5. does anyone know this gun shop
    By black jack in forum North America - Southwest USA
    Replies: 2
    Last: 11-16-2007, 03:49 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •