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Secondary air filter 2006 4.0L

Discussion in 'New Members' started by wolfgang, Feb 26, 2010.

  1. Feb 26, 2010 at 6:58 PM
    #1
    wolfgang

    wolfgang [OP] Active Member

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    Air Intake system
    I was told by the dealer not to remove the secondary air filter because it would cause the engine to run poorly, my 2006 has 105,000 miles on it now and the gas mileage seems to be improving as it gets older up to 23 MPG with real gas not that E85 crap. So does anyone know what the true function of the secondary air filter is, and is there any down side by removing it?
     
  2. Feb 26, 2010 at 6:59 PM
    #2
    luni

    luni Resident Gun-toting Hippie

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    It's to catch backflowing emissions after the engine is shut off. A california inspection requirement. There's apparently a slight performance gain with removing it. More so with the 4 cyl.
     
  3. Feb 26, 2010 at 7:34 PM
    #3
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    No gain removing it on the 4.0.
     
  4. Feb 26, 2010 at 7:39 PM
    #4
    PRBulldog36

    PRBulldog36 Well-Known Member

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    Is this something that needs to be replaced over time ? I have an 06 with 74 plus miles on it. I just replaced the plugs and She's running great !
     
  5. Feb 26, 2010 at 8:23 PM
    #5
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    4.10 gears, sliders, and lots of buttons.
    No. Its just a charcoal filter. Its to "catch" gasoline fumes that can escape thru the intake when the engine is not running.
     
  6. Feb 27, 2010 at 12:10 AM
    #6
    PRBulldog36

    PRBulldog36 Well-Known Member

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    First Name:
    Juan
    San Antonio, Texas
    Vehicle:
    2006 PreRunner SR5 TRD Off Road
    Bilsteins 5100's X4 front set at 2.5 and rear AAL,BFG Rugged Trail T/A P265/65R/17, Warrior 375 17X8 Wheels with Gorilla locks,Black Billet Grille top and bottom and replaced Toyo emblem with Dallas Cowboys Star by MetalMiller, Vent Shade window louvers and hood bug shield, Fog light anytime mod,Dome light Mod,Blue interior LED's, Six inch Black Chrome billet antenna,Firestik CB Antenna, Cobra 75 CB, 12Vt/DC outlet back of Center Console, CB external speaker, Sirius Satellite Radio, Westin tube step up bars (Chrome), Tinted windows (legal), Eyebrow on windshield (Limo),Leather arm rest mod,HID H4's(fog), HID plug and play 8000, Tailgate theft prevention mod and Tailgate Pop-n-Lock, Trailer hitch brake light,Garmin GPS Dashboard Mount, Baja Lights on the rear bed rail, In Bed Mt Bike carrier, Tail gate extender, N-Fab light bar with Four Hella 500's, Fold down antenna,WeatherTech digital floor mats, mount,Kenwood head unit, Polk Audio 6X9,Two 12 ' Subs MTX, Kenwood Excellon 5 1/4, Ke
    Thanks, It will stay especially that that theres no bennies in taking it out.
     
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