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DIY: Fix for whistle after adding high flow air filter

Discussion in 'General Tundra Discussion' started by TruckyTruck, Jan 7, 2014.

  1. Jan 7, 2014 at 3:58 PM
    #1
    TruckyTruck

    TruckyTruck [OP] New Member

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    This is to get rid of the whistle you hear very badly if you have a drop in air filter to the stock air box.

    *Intake gasket w/o screen
    pt# 22271-50050, behind throttle body.
    [​IMG]


    Replacement procedure:
    Remove engine cover.

    Loosen the 2 hose clamps on the connecting tube between the air box and manifold and pull the tube up and out of the way.

    Remove the 4 10mm bolts from the manifold and pull throttle body up out of the way.

    Pull old gasket with screen out, install new gasket.

    Reinstall throttle body, connecting tube and engine cover.
     
    Last edited by a moderator: Sep 17, 2015
    Bullittgt8 likes this.
  2. Sep 16, 2015 at 8:41 AM
    #2
    csuviper

    csuviper Moderator Staff Member

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    An alternative to purchasing a new part is to cut the screen out of the stock gasket for a little price savings.

    Found some pictures online of the procedure to get to the gasket.

    2a95wdv.jpg

    2zsr0jp.jpg

    2yv2a8p.jpg

    1051njb.jpg

    263htab.jpg
     
    Last edited: Sep 17, 2015
    CJ21, Bullittgt8 and TruckyTruck [OP] like this.
  3. Apr 6, 2017 at 4:35 AM
    #3
    Mark037

    Mark037 New Member

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    Buy the tundra 4.6 throttle body gasket, in 1st picture with 5.7 screened gasket. I tried to saw the screen out of the 5.7 gasket and i promise you it's worth the >10 price tag to just get the 4.6 one. Same diameter amd everything, just no screen.
     
  4. Apr 6, 2017 at 5:22 AM
    #4
    Crewmax Chris

    Crewmax Chris Paper Airplane Enthusiast

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    I just pulled it out, used tin snips to cut out the screen and put it back in. Ten minutes max, no more annoying whistle.
     
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  5. Apr 6, 2017 at 11:11 AM
    #5
    Tundracollector

    Tundracollector New Member

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    I wonder what's the purpose of the screen though? Why did Toyota engineers have a screen there in the first place?

    It doesn't look like it does much in terms of filtration, is it really just there just to make a whistle?

    I would really like to know it's original purpose.
     
  6. Apr 6, 2017 at 11:24 AM
    #6
    csuviper

    csuviper Moderator Staff Member

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    I believe it's there if the mass air flow sensor breaks off. Not 100% though. Weird that here are some models with same engine that don't come with one.
     
    Crewmax Chris likes this.
  7. Apr 6, 2017 at 11:40 AM
    #7
    Tundracollector

    Tundracollector New Member

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    Hmm I can see how that would be a purpose for it. I haven't checked if mine has one but I'm pretty sure it does, after installing a trd intake the whistle because really pronounced.

    But honestly I don't mind it at all, I can't really hear it over the radio anyways.

    I wonder if people would complain if that whistle/whine came from a supercharger instead lol :)
     
  8. Apr 6, 2017 at 11:45 AM
    #8
    Crewmax Chris

    Crewmax Chris Paper Airplane Enthusiast

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    I know I wouldn't!
     
    Tundracollector likes this.
  9. Apr 6, 2017 at 12:04 PM
    #9
    bsktball55

    bsktball55 New Member

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    I couldn't stand that whistle in my truck before I got rid of the screen, but I am very sensitive to high pitch sounds.
     
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