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Drop in mileage after installing AFE air filter???

Discussion in '2nd Gen. Tacomas (2005-2015)' started by armyairforce89, Oct 15, 2010.

  1. Oct 15, 2010 at 8:24 PM
    #1
    armyairforce89

    armyairforce89 [OP] Active Member

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    Ready Lift SST Lift Kit, Fog Lights, Aluminum Diamond Plate Tool Box, AFE ProDry S Air Filter, UltraGuage, BF Goodrich Long Trail T/A 235x75x15's
    I just installed a AFE ProDry s air filter in place of the factory air filter with about 20,000 miles on it. I have an UltraGuage and have been averaging about 23.5mpg. After installing the AFE my mileage dropped to about 21mpg. Is there a reprogramming time needed following the air filter change, or is it possible I did something wrong? I did notice that my idle smoothed out a little bit and my accelerator feels a little more responsive, but a little concerned if my mileage does not come back up.
     
  2. Oct 15, 2010 at 8:34 PM
    #2
    afd23a

    afd23a Well-Known Member

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    you can always disconnect your battery for a few minutes. That will make your computer reset. Your gas mileage may not go up immediately, the computer has to readjust for the new filter.
     
  3. Oct 15, 2010 at 8:43 PM
    #3
    rzimm001

    rzimm001 Tearmytaco

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    If you swallow more air.. You must swallow more gas. Therefore mpg goes down. Drive like there's an egg under your accelerator.
    FYI, be careful with afe filters. They work well on the street but for offroading I've noticed they let through a little too much debris. Both sides of the filter were brown last time my buddy washed his after offroading.
     
  4. Oct 15, 2010 at 8:57 PM
    #4
    borderbrat

    borderbrat Watching Chris4x4 o.O

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    did you install a drop in filter or the whole intake.
     
  5. Oct 15, 2010 at 9:00 PM
    #5
    armyairforce89

    armyairforce89 [OP] Active Member

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    I just did the staight drop in.
     
  6. Oct 15, 2010 at 9:27 PM
    #6
    borderbrat

    borderbrat Watching Chris4x4 o.O

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    I'm guessing your driving habits have changes slightly then.
     
  7. Oct 16, 2010 at 7:41 AM
    #7
    Yuma Taco

    Yuma Taco Well-Known Member

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    I installed a AFE filter at 15,000 miles and I have not seen any change in MPG according to my ScanGauge (or calculated) in the last 3,000 miles.

    Yuma Taco,
     
  8. Oct 16, 2010 at 7:50 AM
    #8
    jhodge83

    jhodge83 Any dog under 50# is a cat and cats are useless... Moderator

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    wat?
    you also need to give that ultra gauge time to build a stable set of readings for the "average mpg". when i started on mine it was over 20mpg and now sits at 18mpg, which i think is still slightly high for my truck. it's more like 16.

    when i go offroading, especially in dusty conditions, i always throw the stock filter back in.
     
  9. Oct 16, 2010 at 10:27 AM
    #9
    rzimm001

    rzimm001 Tearmytaco

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    ^^ X2 for my buddy

    I'm using the K&N filter with oil. Works great on and off the pavement. Just have to be careful not to use to much oil as it can go into your intake and make it grimy. Now I just apply a light layer to the outside and we'll see how that works out.
     
  10. Oct 16, 2010 at 2:20 PM
    #10
    cantac09

    cantac09 Official TW Igloo Builder

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    i havent notced a drop
     
  11. Oct 16, 2010 at 2:26 PM
    #11
    Janster

    Janster Old & Forgetful

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    Perhaps the 2.4L 5 lug tacomas mileage is more affected by the air filter in terms of gas mileage??

    I've had an AFE for about a year in my 4WD 4.0L TRD and I haven't seen any changes in gas mileage.
     
  12. Oct 17, 2010 at 7:32 PM
    #12
    armyairforce89

    armyairforce89 [OP] Active Member

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    Ready Lift SST Lift Kit, Fog Lights, Aluminum Diamond Plate Tool Box, AFE ProDry S Air Filter, UltraGuage, BF Goodrich Long Trail T/A 235x75x15's
    After running it for a few days now the mileage is actually up about 1 mpg from where it was before. Apparentally it just needed some reprogramming time.
     
  13. Oct 17, 2010 at 8:04 PM
    #13
    supralight

    supralight Well-Known Member

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    My guess is that you moderated your driving habits...
     
  14. Oct 17, 2010 at 8:39 PM
    #14
    pinktaco808

    pinktaco808 Hot Steppa

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  15. Mar 5, 2011 at 3:59 PM
    #15
    TheRiddleOfSteel

    TheRiddleOfSteel Well-Known Member

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  16. Mar 5, 2011 at 7:19 PM
    #16
    Yuma Taco

    Yuma Taco Well-Known Member

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    I have had my AFE in now for over 6k miles and I have not seen any improvement in performance or MPG. But I have not seen any loss. :rolleyes:

    It has been easy to clean! So, I feel it has been worth the cost.

    Yuma Taco,
     
  17. Mar 5, 2011 at 7:24 PM
    #17
    Tacoyota

    Tacoyota senile member

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    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.
    I expected more mpg and no real difference in power with mine . What i got was more power and less mpg , nothing bad thoughas i see it.
     
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