DIY How-To: Removing Carbon Filter w/o Damaging It

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Thread: How-To: Removing Carbon Filter w/o Damaging It

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    Forum Admin Tundradrenalin's Avatar
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    Do-It-Yourself How-To: Removing Carbon Filter w/o Damaging It

    I've seen dozens of threads regarding the infamous carbon filter in the stock airbox. Some of them had people cutting out the mesh, some cutting out the plastic, all leaving the carbon filter FUBAR. Here's what I did to remove the thing and have it available to reinstall. Yes, I said, reinstall.
    Note: no shameless beer plugs in this write-up:crazy:


    First, some interesting pictures of the filter from two different perspectives.
    Here's what it looks like held up to the light.
    Click image for larger version. 

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    Here's what it looks like with the light shown from behind the filter.
    Click image for larger version. 

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    Ok now, the dissection of the airbox...


    Step 1.
    Remove the airbox, duh. Or at least the top half.
    You'll need the popular 10mm socket and at least a 7" extension to remove the entire box. You need a #2 phillips and maybe a 10mm to remove just the top half.


    Step 2.
    Remove the MAF. (#2 phillips needed here)


    Step 3.
    Stick your arm in the hole, Flash Gordon style.
    Click image for larger version. 

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    Step 4.
    Reach all the way back, these are the easy ones.
    Gently push up on one of the plastic corners, not the fabric.
    See these little circles?
    Click image for larger version. 

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    Push on those from behind. They'll pop out with moderate pressure.
    Click image for larger version. 

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    Step 5.
    Repeat step 4 on the middle tabs.
    Click image for larger version. 

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    Step 6.
    Pull the back up, the only two circles still attached are those in the front, where you couldn't reach from the inside. Well, I couldn't reach.
    Click image for larger version. 

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    Now you can pry the front two loose.


    End result:
    A carbon filter that isn't all jacked up and an airbox that requires no scrutinizing cleaning!
    Click image for larger version. 

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    Easy huh?
    The tabs were melted on from the factory, and if you pulled them off gentle enuogh, you can reattach them. If all 6 are back on, the tension of the plastic frame will hold them back on snug.


    Also, don't bother cleaning it, nothing comes out, it never gets white again, and it takes hours to dry. I tried.
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    The Friendly Dragon by the Sea Puffnstuff's Avatar
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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    Nice write up. What purpose does removing the mesh serve?
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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    I don't know, lol. I put it back in. :laughing:

    Thought it would clean up, but it didn't.
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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    What years/models of Tundra have this carbon filter?

    Fred

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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    Quote Originally Posted by Brad's Dad View Post
    What years/models of Tundra have this carbon filter?

    Fred

    Good question! Now have me wondering if my '01 has one. I've put in a few air filters but never remember looking in to the top side.
    Carbon filters are usually used to keep migrating fuel odors from backing out of the engine during a thing called a "shed test." This is where the entire vertical is put in a shed or sealed bag of sorts and they measure the emission the vehicle puts off just sitting there. The carbon absorbs the fuel vapors and then when it's running they are suck back into the air stream.
    Other wise I can't see why you couldn't remove this. I don't believe it does any actual filtering.
    Mike
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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    OK, went and checked, 2001 does not have it.
    Mike
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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    Quote Originally Posted by MEvang View Post
    OK, went and checked, 2001 does not have it.
    Mike
    2002 also doesn't have it.
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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    Nice write-up. I can't tell you if the '03 has this or not as my stock airbox is in the top of the shed, at the back, about a half-day of moving crap to get to it. So one of the other '03s will have to look and see if this is in their airbox. Maybe it came out with the VVTI engines?
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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    EXCELLENT write-up "Tundradrenalin"! A little patience goes a looooooong way.
    Thanks again...
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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    Quote Originally Posted by Puffnstuff View Post
    Nice write up. What purpose does removing the mesh serve?
    I removed mine to try and improve air flow because it seems to be very restrictive.Did make my intake a good bit louder.
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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    Quote Originally Posted by Brad's Dad View Post
    What years/models of Tundra have this carbon filter?

    Fred
    from 2003+ have those filters
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    Junior Member toyotakid1996's Avatar
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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    Would this do any harm to the MAF or the truck running with it out. Assuming you always have clean paper in there.
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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    The filter is pretty non restictive. There is no cleaning ever required. You won't gain anything taking it out except adding to pollution. I accidentally took it out of my 4 Runner while trying to figure out what it was. It was too messed up to put it back in. I checked my 03 Tundra and it has one but I left it in. You never know when emmissions testing will get tighter.
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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    I know that some of the guys on the 2nd gen Tundra forum are removing the carbon filter and claiming a 2 MPG increase in fuel mileage. I was thinking of removing it from my 05 to see if there might be any improvement. If it is removed carefully it can also be replaced if desired with no harm done.

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    Default Re: How-To: Removing Carbon Filter w/o Damaging It

    Quote Originally Posted by Diego View Post
    I know that some of the guys on the 2nd gen Tundra forum are removing the carbon filter and claiming a 2 MPG increase in fuel mileage. I was thinking of removing it from my 05 to see if there might be any improvement. If it is removed carefully it can also be replaced if desired with no harm done.
    I removed it. Carefully per Tundradrenalin's good post. Came out easy. Did a intake clean and MAF clean also. I'll fill up tomorrow with top tier and check mileage on a full tank by Thursday or so. I'll reply and post. Intake did sound louder, but my truck also runs faster after a good oil change. :crazy:. TLC never hurt anything..
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