How To: Airbox Mod

Discussion in 'How-to Guides' started by dwill3015, Jan 3, 2009.

  1. dwill3015

    dwill3015 Epic Member 5+ Years ROTM Winner 1000 Posts


    3" holesaw
    Small Drill bit
    Phillips screwdriver
    Dremel cut tool

    4 SS screws
    .025 sheet of aluminum (cut out of 8"x 18" sheet)
    Shop vac filter.

    1. Remove Airbox from Vehicle
    2. Locate the side of the filter box facing the headlight assembly. In the lower left corner, remove the 3 center ribs on the outside of the box with Dremel.
    3. Drill a 3" hole into airbox between the two remaining ribs.
    4. Cut a piece out of the shop vac filter to fit area where the hole is and between the two ribs you didn't cut out.
    5. Cut the Aluminum sheet to the same size as the shop vac filter and drill a 3" hole in the middle. Try to match the hole location in airbox.
    6. Drill 4 pilot holes and attach to airbox using SS screws.

    1. Use material that won't rust.
    2. Alternate material-Corragated metal (if you can find it)
    3. Reason I chose shop vac filter? If it can keep water out of a shop vac motor, it will keep the bugs and water out of my K&N filter.

    Last edited by a moderator: Jul 24, 2010
  2. ibmoses

    ibmoses Rockstar 100 Posts

    Thanks for the write up.

    I can hear my engine moan now when I gouge on it. It seems like it has more power but that may just be the noise...

    Now if I could figure out how to make a cold air scoop with a hose that would direct air into the hole in the air box...

    I saw the SS scoop and hose Volant makes. Perhaps someone has some ideas...

  3. MWright936

    MWright936 Epic Member 5+ Years 1000 Posts

    Great mod Darcy! Looks very clean. Thanks for the write up!
  4. 04sierracrewcab

    04sierracrewcab Epic Member 5+ Years 1000 Posts

    And I put this write up on the myspace too!
  5. bzboardco

    bzboardco Rockstar 100 Posts

    I was wondering if you were to somehow get this to mount to the mod and run it to the grille would it help more?
  6. tlperry68

    tlperry68 Epic Member 5+ Years 1000 Posts

    Nice work.
  7. ibmoses

    ibmoses Rockstar 100 Posts

    That looks like it would almost work with one of the vent slots between the bumper and the grille surround. Where did you find it?
    I was trying to figure out how to rig up a scoop/tube from the opening where the tow hook is located.

  8. oOcornflakeOo

    oOcornflakeOo Rockstar

    GangsteR :glasses::sign0011:
  9. bzboardco

    bzboardco Rockstar 100 Posts

  10. tbplus10

    tbplus10 Epic Member Staff Member 5+ Years 5000 Posts Platinum Contributor

    Great mod Darcy.
    In the Toyota world they've been doing an Airbox mod for years that might work well in conjunction with this.
    They use a Marine "Deck Plate" and mount it over a corresponding size hole cut in the box (Deck plates can be purchased in sizes from 2" to 10"). This allows you to close up the hole during wet conditions where you may get to much water in (water crossings, bad rain storms, etc).
    You can seal the edges of the deck plate with "Sensor Safe Silicone RTV" if you want a real leak free install.
    A couple notes tho:
    If you use RTV allow 24 hrs to cure and fumes filter out before starting the engine.
    Only use sensor safe RTV, other types of RTV have a habit of screwing up the intake sensors when used and causing a CEL.
    Deck plates can be bought from local Marine supply stores, Walmart, and places like Marine 1 or West Marine on the net.
    I prefer plastic Deck Plates but metal ones are available also, they just cost more.

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