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Seeking advice on high altitude intake systems.

Discussion in '4 Cylinder' started by Icewatersteam, Apr 4, 2012.

  1. Apr 4, 2012 at 11:04 AM
    #1
    Icewatersteam

    Icewatersteam [OP] Comptroller

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    I live at approximately 6000' and go higher on a routine basis. Would aFe's whole stage 2 cold air intake be worth it for sheer flow volume (if not cold air)? I know it's a cold air system to begin with, but they claim 137% greater flow. http://afepower.com/shop/details_ne...odel=Tacoma&year=2011&engine=2.7L&&brandID=53
    I know about the secondary filter mod, but don't want to do it 'til a few years after it's all paid off. Not that I'm complaining! Altitude limits all vehicles here, and this a prowly little reg cab, 4x4, manual mountain lion!
     
  2. Apr 4, 2012 at 7:01 PM
    #2
    chriss

    chriss Well-Known Member

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  3. Apr 4, 2012 at 7:18 PM
    #3
    worthywads

    worthywads Well-Known Member

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    The stock intake isn't your limiting factor, it easily flows more than your 2.7L can ingest, nothing short of a supercharger or turbo is going to make up for the 15+% reduction in power you will see at 6000 ft.

    The surface area of the 2.7L filter is greater than for the 4L, it isn't a big restriction and removing the secondary filter won't help either.

    A theoretical 137% increase in flow rate is nothing but a bogus comparison of maximum flow rate way above what your 2.7L can pull at max rpm. Totally irrelevant to the air your engine can use.
     
  4. Apr 4, 2012 at 7:20 PM
    #4
    Kelson

    Kelson My Truck is Cuter than Yours

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    actually, removing the secondary filter will help alot. especially when combined with a drop in permanent filter replacement.
     
  5. Apr 4, 2012 at 8:07 PM
    #5
    worthywads

    worthywads Well-Known Member

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    Evidence?
     
  6. Apr 4, 2012 at 10:08 PM
    #6
    Kelson

    Kelson My Truck is Cuter than Yours

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    Um. Search..........


    And I've done it. It makes a difference over stock. Throttle response is much better, slightly better power etc. Im not the only one to report this.

    It's a free mod, so of course it's not going to have drastic improvements over base, but a CAI doesn't either especially for this motor.
     
  7. Apr 5, 2012 at 5:45 AM
    #7
    worthywads

    worthywads Well-Known Member

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    I have searched and found nothing but butt dynos and the unmeasurable "throttle response".

    You went from "alot" to "slightly" pretty fast.
     
  8. Apr 5, 2012 at 8:19 AM
    #8
    memario1214

    memario1214 Vivid Illumination Vendor

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    Ill be honest here and say that I have installed just about every NA mod that you can onto my truck. My truck is still incredibly underpowered at this elevation. I wont do anything more to the performance aspect of my truck until I get enough money together for a S/C... I would save your pennies for something that's gonna actually help. Just my .02
     
  9. Apr 5, 2012 at 5:01 PM
    #9
    Kelson

    Kelson My Truck is Cuter than Yours

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    well then don't do it then.

    i'm just trying to give the OP ideas.

    and i don't give a fuck about the wording. it's the internet. don't be nitpicky.
     
  10. Apr 5, 2012 at 7:57 PM
    #10
    chriss

    chriss Well-Known Member

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    I wasn't very clear in my earlier post.
    Remove both the secondary filter and the intake silencer. Do not worry about any negative performance issues. I live at 5000 ft and have had no issues. The 2.7 is only 159 hp at sea level but this will help.
     
  11. Apr 6, 2012 at 1:30 AM
    #11
    MountainEarth

    MountainEarth Well-Known Member

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    ^^ This. Heck my truck feels like a burly beast at 6000 feet! (I'm at 8650).
     
  12. Apr 10, 2012 at 9:48 PM
    #12
    Icewatersteam

    Icewatersteam [OP] Comptroller

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    A SC is a bit out of my price range for now. Is the intake muffler the resonator referred to in that thread up yonder?
     
  13. Apr 10, 2012 at 9:57 PM
    #13
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Most 4 banger owners remove the secondary filter and drop in a high flow filter. A full intake won't do much more if anything.
     
  14. Apr 12, 2012 at 9:51 PM
    #14
    Icewatersteam

    Icewatersteam [OP] Comptroller

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    Thank you, and everybody.
     
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