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Hydrocarbon Filter Removal

Discussion in 'Performance and Tuning' started by Tundramoney, Apr 10, 2018.

  1. Apr 10, 2018 at 7:34 AM
    #1
    Tundramoney

    Tundramoney [OP] Old school

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    Anyone remove there Hydrocarbon filter?

    Concept: This modification removes the hydrocarbon charcoal emissions filter located in the airbox in order to increase intake airflow.

    While normal air filters serve the purpose of removing particulate matter, such as dirt or debris, from the air entering the air intake manifold, the normal air filter provides little help in preventing evaporative emissions from the intake manifold from entering the atmosphere. Such emissions are a particular problem when the engine is turned off and the intake manifold is hot. This source of air pollution has received considerable attention from the federal and state governments with the goal of reducing such emissions.

    To that end, the California Air Resources Board (CARB) which effectively sets the maximum air pollution exhaust standards for all motor vehicles sold in the United States, has passed a regulation which requires that a hydrocarbon trap filter be connected in series with the air intake of most motor vehicle internal combustion engines.

    Designs of such a hydrocarbon trap air filter has resulted in a flat-panel hydrocarbon trap filter relatively permanently secured to a downstream section of a conventional OEM closed air box, to inhibit tampering, with a conventional flat panel air filter releasably secured to an upstream section of the closed air box.

    The carbon trap filter is formed with one or more layers of granulated activated charcoal (GAC) sandwiched between layers of porous material such as plastic netting and/or non-woven unipolyurethene surrounding an open core. The porous filter media and GAC may be confined within a suitable wire mesh to provide structural strength and rigidity.

    From the time people began modifying the automobile, one thing they always want to do is to get more air into the engine. Weather it be a high flow oiled foam air filter, a hole or holes cut into the factory airbox, intake elbow removal, intake silencer removal, an aftermarket cold air induction kit (CAI), a ram air set-up, or full on supercharger...more air equals more power. Removing the factory hydrocarbon filter located in the airbox is just one simple (and free) way to increase airflow.
     
  2. Apr 10, 2018 at 8:01 AM
    #2
    dirtydeeds

    dirtydeeds New Member Vendor

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    I’ve never noticed an appreciable difference from removing it. Seems the regular air filter is more restrictive.
     
  3. Apr 14, 2018 at 8:01 AM
    #3
    Tundramoney

    Tundramoney [OP] Old school

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    Does the HC filter located on the top of your air box do anything?
     
  4. Apr 14, 2018 at 8:08 AM
    #4
    Danimal86

    Danimal86 What's a Dickfir?

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    It's part of the emissions.

    Per S&b they can't replicate the carbon filter so that's why they, or anyone other than the TRD cant get a carb cert.
     
  5. Apr 14, 2018 at 8:13 AM
    #5
    Tundramoney

    Tundramoney [OP] Old school

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    Its weird that it stays in there with out being changed seems like it would get dirty and clogged up after a while
     
  6. Apr 19, 2018 at 6:44 AM
    #6
    BlueBottle

    BlueBottle not a PRO

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    See fine print
    I changed my filter and noticed this thing. Is there maintenance on replacing this as time goes?

    Does anyone in CA w the trd cai intake have this filter still?

    For you CA peeps do smog techs actually open up the air box to check to see if it’s in there?
     
  7. Apr 19, 2018 at 7:53 AM
    #7
    Tundramoney

    Tundramoney [OP] Old school

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    I am in Florida and have one on my SR it is supposed to block emissions from backflowing into the atmosphere when you turn the engine off. Seems kind of like a environmentaly wackoish contraption to me.
     
  8. Apr 19, 2018 at 7:57 AM
    #8
    15whtrd

    15whtrd Mr. Blonde

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    TRD Pro suspension, +2 Coachbuilder shackles, 2015 TRD Pro headlights, 20% ceramic tinted windows, clear ceramic tinted front windshield, aFe drop in pro s dry air filter, TRD airflow accelerator, TRD oil fill cap, TRD 18 psi radiator cap, BDX Bullydog tuner, Weathertech floor mats front and rear, rear seat fold down mod, DNA hard trifold tonneau cover, Linex with uv protection, TRD rear swaybar, TRD center caps, TRD Pro grille insert with color matching surround and bulge, TRD PRO headlights, aluminum oil filter canister, Real truck tailgate seal, Pop-n-lock tailgate lock actuator, rear diff breather relocate, RCI front skid plate. 275/70 R18 BFG KO2s
    I ripped my Hydrocarbon filter out probably the first week I owned the truck.
     
    Tundramoney [OP] likes this.
  9. Apr 19, 2018 at 7:59 AM
    #9
    Tundramoney

    Tundramoney [OP] Old school

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    Probably get better gas mileage without it.
     
    Last edited: Apr 19, 2018
    15whtrd likes this.

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