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Secondary air filter out update

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Knot Guilty, Sep 28, 2009.

  1. Sep 28, 2009 at 3:19 AM
    #1
    Knot Guilty

    Knot Guilty [OP] Member

    Joined:
    Sep 6, 2009
    Member:
    #22339
    Messages:
    21
    Gender:
    Male
    First Name:
    Daniel
    Charleston, SC
    Vehicle:
    09 Access cab 4x4 4cyl Barcelona Red
    Black UWS tool box, Bed mat, Tinted all the way around, AFE Air Filter, Secondary air filter removed, Debadged, Seat belt mod, Cobra 29 w/lil wil antenna, EGR Rain Guards, Black Husky liners, Grey and Black factory Tacoma seat covers, AR Mojave Wheels, Flowmaster 40, Nitto Terra Grapplers
    I have a 2009 access cab 4x4 4cyl. I have around 12,000 miles on my truck. I decided to take my secondary air filter out last week and would recommend that anyone who has the 4cyl take theirs out too.

    I drive 68 miles each way to work. That makes for 136 miles round trip. This is all highway miles ranging from 45-75mph. I make this trip 3-4 times a week depending if it is my short week or long week. I tell all of this because I get a really good comparison because my driving habits are the same which makes it easy to see the difference in mpg.

    Before I took it out I was getting 21-22 mpg every fill up. After I took it out i got 24.56 mpg on the first fill up. I will keep you posted if it goes up or down with more fill ups. As far as performance goes I haven't really noticed a difference but I haven't pulled my boat yet. I have a 20ft flats boat that I pull and will keep you posted it I notice a difference after I pull it.

    As a side note just thought I would let those know that haven't done this yet that you do not have to drill anything to get this filter out. I simply took a small flathead screwdriver and popped the top of the posts off that hold the filter in. It took about 10 minutes to get the top of the aribox off, take the filter out and reinstall the top of the air box. Since I did not drill I can still put the filter back in if I need to.

    I will be ordering the pro dry air filter this week and will let yall know if I seen any increase in mpg after I install it.

    Happy wheeling Yall!
     
  2. Sep 28, 2009 at 6:14 AM
    #2
    95SLE

    95SLE Starting to get cold outside

    Joined:
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    #20718
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    First Name:
    Tom
    Maryland
    Vehicle:
    09 RWD Access Cab
    Custom XM Install, Window Tint, Intermittant Wiper Install, AVS Bug Deflector, Bed Mat, TRS FX-R retrofits, CIBIE fog and spot lamps, PIAA 510 lamps, Acess LE cover, Weathertech Digital floorr mats, LED interior lighting, Pioneer AVH-2300BT HU, Boston Acoustics speakers, JL Audio Amp, shorty antenna, leather wrap steering wheel cover, Viper security system.
    Danial:
    First welcome to TW.

    I am also interested in gaining a few MPG. By taking out the secondary filter do you think we run the risk of higher silicates making it into the oil?

    BTW I just turned 2K on my 09 AC 2WD.
     
  3. Sep 28, 2009 at 6:18 AM
    #3
    Tacoyota

    Tacoyota senile member

    Joined:
    Jul 22, 2009
    Member:
    #20028
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    2,960
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    Male
    North of Cali, South of Canada
    Vehicle:
    08 4wd
    4.56 gears, rear trutrac,DT header, 235/85r16 Duratracs, 2nd filter pulled, inter.wipers, Cruise control, Factory alum. whls/winter tires(2nd set), Afe pro Dry-S , Dumbo eared flaps cut down.
    My 08 has just over 12,000 mi. too. Took my 2ndary off last March or so, but I cant determine if it has any power or mpg change. With synthetics and the 2ndary removed, I do notice it is less sensitive to clutch release at a red lights. Current mpg @60mph (thought it was 65,but speedo error..) is 26 mpg.Might get me a tonneau soon, I'm micro managing them trying to decide.
     
  4. Sep 28, 2009 at 6:19 AM
    #4
    Knot Guilty

    Knot Guilty [OP] Member

    Joined:
    Sep 6, 2009
    Member:
    #22339
    Messages:
    21
    Gender:
    Male
    First Name:
    Daniel
    Charleston, SC
    Vehicle:
    09 Access cab 4x4 4cyl Barcelona Red
    Black UWS tool box, Bed mat, Tinted all the way around, AFE Air Filter, Secondary air filter removed, Debadged, Seat belt mod, Cobra 29 w/lil wil antenna, EGR Rain Guards, Black Husky liners, Grey and Black factory Tacoma seat covers, AR Mojave Wheels, Flowmaster 40, Nitto Terra Grapplers
    Nah, none of the earlier model trucks had a secondary air filter and if you do a cai it eliminates the secondary air filter also. From what I understand all this filter does is keep gasoline vapors from entering the air after you shut the truck off. It is completely made of charcoal and is pretty thick. I tried to blow some air through it after I took it out and it is definitely very restrictive.
     
  5. Sep 28, 2009 at 6:21 AM
    #5
    Knot Guilty

    Knot Guilty [OP] Member

    Joined:
    Sep 6, 2009
    Member:
    #22339
    Messages:
    21
    Gender:
    Male
    First Name:
    Daniel
    Charleston, SC
    Vehicle:
    09 Access cab 4x4 4cyl Barcelona Red
    Black UWS tool box, Bed mat, Tinted all the way around, AFE Air Filter, Secondary air filter removed, Debadged, Seat belt mod, Cobra 29 w/lil wil antenna, EGR Rain Guards, Black Husky liners, Grey and Black factory Tacoma seat covers, AR Mojave Wheels, Flowmaster 40, Nitto Terra Grapplers
    Yeah I noticed that when my speedo says 65mph my gps bounces between 60 and 61mph. I don't know which one to believe
     
  6. Sep 28, 2009 at 6:21 AM
    #6
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    GPS is more accurate.
     
  7. Sep 28, 2009 at 6:24 AM
    #7
    Knot Guilty

    Knot Guilty [OP] Member

    Joined:
    Sep 6, 2009
    Member:
    #22339
    Messages:
    21
    Gender:
    Male
    First Name:
    Daniel
    Charleston, SC
    Vehicle:
    09 Access cab 4x4 4cyl Barcelona Red
    Black UWS tool box, Bed mat, Tinted all the way around, AFE Air Filter, Secondary air filter removed, Debadged, Seat belt mod, Cobra 29 w/lil wil antenna, EGR Rain Guards, Black Husky liners, Grey and Black factory Tacoma seat covers, AR Mojave Wheels, Flowmaster 40, Nitto Terra Grapplers
    Everything is stock right now with the suspension and tires and rims so I guess toyota made the speedo a little off so when you think you are going 5mph over you are really doing the speed limit
     
  8. Sep 28, 2009 at 6:24 AM
    #8
    Tacoyota

    Tacoyota senile member

    Joined:
    Jul 22, 2009
    Member:
    #20028
    Messages:
    2,960
    Gender:
    Male
    North of Cali, South of Canada
    Vehicle:
    08 4wd
    4.56 gears, rear trutrac,DT header, 235/85r16 Duratracs, 2nd filter pulled, inter.wipers, Cruise control, Factory alum. whls/winter tires(2nd set), Afe pro Dry-S , Dumbo eared flaps cut down.

    Yup, my odometer was ok, the speedo looks to be around 2 off at 30, 5 off at 65 mph (as read off the speedo).

    ARGH! Chris is baiting me into a threadjack!:D
     
  9. Sep 28, 2009 at 6:25 AM
    #9
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
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    Member:
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    Messages:
    106,156
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    :spy:
     
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