1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Sudden decline in MPG

Discussion in '1st Gen. Tacomas (1995-2004)' started by calebdnehus, Jan 21, 2013.

  1. Jan 21, 2013 at 10:47 PM
    #21
    calebdnehus

    calebdnehus [OP] Well-Known Member

    Joined:
    Jun 28, 2011
    Member:
    #59015
    Messages:
    370
    Gender:
    Male
    First Name:
    Caleb
    Arkansas
    Vehicle:
    '98 Prerunner V6--2004 Tacoma facelift
    K&N cold air intake FPIK, FlowMaster 40 series muffler, Euro Diamond clear headlights, 2003 tacoma tailights, bixenon HID headlights, 4 inch lift, pioneer headunit w/kicker door speakers(amped w/Rockford four channel), 2004 facelift, led dash light mod, painted needles, black auto shifter, leather steering wheel, ultra gauge. Plenty to come... Still
    I've been looking in to finding a good replacment for my current K&N, but haven't found yet. Do you have any suggestions of good filters that would be just a swap out from the K&N without modification? I have a 1998 3.4 V6
     
  2. Jan 21, 2013 at 10:49 PM
    #22
    AK Taco

    AK Taco Your opinion? Fuck it.

    Joined:
    Apr 14, 2012
    Member:
    #76924
    Messages:
    3,135
    Gender:
    Male
    First Name:
    matt
    Anchorage, Ak/ Corvallis, Or
    Vehicle:
    chrome-free '99 sr5
    20% tint on all windows, Deckplate mod, satoshi-ish grille, blacked out and/or body matched emblems, rattle canned rims, red l.e.d. interior lights, bilstein 5100's and OME 881 coils , deaver 8 leaf pack, 1.5" lift shackle, alpine sound system, 55w HID lightforce 140 and 170 fogs, 6k hid's
    AFE is a popular choice around here.
     
  3. Jan 21, 2013 at 10:51 PM
    #23
    Blackdawg

    Blackdawg Dr. Frankenstein

    Joined:
    Dec 31, 2010
    Member:
    #48500
    Messages:
    50,483
    Gender:
    Male
    First Name:
    Monte
    Wyoming/St. Louis
    Vehicle:
    96.5 FrankenTaco & 03 Stock dbl cab
    BFG KM2 33x12.5 tires, Wheelers Type B rims, Allpro 1.5'' Wheel spacers w/extended thread lug nuts 2 Alpine 10'' Type Xs 2 Kicker 6X9s 4 Sony 5 1/4s Pioneer 4100 HU Sway bar removed 4 Hella 500 HIDs Frankenstein Leaf packs 1'' lift shackles Eibach coils 5100s front 10'' 5150s rear BAMF BPV bracket Deckplate mod Elite Front bumper Magnaflow 14'' muffler Elite Off Road Rear bumper with Tire gate with jerry can and fold down table, BAMF sliders, Custom Homemade Bed, rack/roof rack, CVT Mt. Shasta Roof Top Tent, 20lb CO2 tank, BAMF diff skid custom front skid, GM CS144 140 amp alternator Blitzpro 21s HAWK side LEDs Blitzpro Custom made side mirror lights, LightForce 240 Blitz llights, Piaa 510 ION fogs, XRC8 Winch w/in cab controls,
    Is it the full intake or just a drop in filter?

    Just paper filters work the best in the OEM box or the afe pro dry is a good one.

    If its the k&n with the cone filter then look up afe pro dry s. you can have one made to your exact size for whatever you want.
     
  4. Jan 21, 2013 at 11:54 PM
    #24
    calebdnehus

    calebdnehus [OP] Well-Known Member

    Joined:
    Jun 28, 2011
    Member:
    #59015
    Messages:
    370
    Gender:
    Male
    First Name:
    Caleb
    Arkansas
    Vehicle:
    '98 Prerunner V6--2004 Tacoma facelift
    K&N cold air intake FPIK, FlowMaster 40 series muffler, Euro Diamond clear headlights, 2003 tacoma tailights, bixenon HID headlights, 4 inch lift, pioneer headunit w/kicker door speakers(amped w/Rockford four channel), 2004 facelift, led dash light mod, painted needles, black auto shifter, leather steering wheel, ultra gauge. Plenty to come... Still
    Okay, I have the cone filter so I'll go pro dry s
     
  5. Jan 22, 2013 at 7:28 AM
    #25
    SUPERNICK

    SUPERNICK Active Member

    Joined:
    Jan 20, 2013
    Member:
    #95611
    Messages:
    26
    Gender:
    Male
    First Name:
    Nick
    Northern California
    Vehicle:
    01 XTRA CAB TRD 4X4
    STOCK for now
    Ive been looking around got CIA systems and the one I seem to find that will work the best for me since Im in CA is the AEM. It has the CARB cert and a dry filter. So that may be an option for you. I also noticed poking around that K&N makes the filter products for them it seems.

    I know a little off topic but could increase MPG jussayin
     
  6. Jan 22, 2013 at 7:42 AM
    #26
    gunner76137

    gunner76137 Xrunner Junkie

    Joined:
    Nov 23, 2008
    Member:
    #10958
    Messages:
    451
    Gender:
    Male
    First Name:
    John
    Johnson City Tennessee
    Vehicle:
    Radiant red
    8K HID's and foglights, Pioneer HU,Boston acoustics amp,2.o farad cap,12 in Kenwood ,fog light mod, Doug Thorley long tube headers Jardine cat back exaust, Kool View cai, 7 color LED underbodies. Carbon fiber roof and evo mod, Custom Graphics ,URD S/S,QA1 18 way adjustable rear shocks, led interior lights and license plate lights and many more mod's
    It could also be the cold weather, I go from 17-18 mpg to about 14-15 mpg in the winter.
     
  7. Jan 22, 2013 at 8:49 AM
    #27
    Blackdawg

    Blackdawg Dr. Frankenstein

    Joined:
    Dec 31, 2010
    Member:
    #48500
    Messages:
    50,483
    Gender:
    Male
    First Name:
    Monte
    Wyoming/St. Louis
    Vehicle:
    96.5 FrankenTaco & 03 Stock dbl cab
    BFG KM2 33x12.5 tires, Wheelers Type B rims, Allpro 1.5'' Wheel spacers w/extended thread lug nuts 2 Alpine 10'' Type Xs 2 Kicker 6X9s 4 Sony 5 1/4s Pioneer 4100 HU Sway bar removed 4 Hella 500 HIDs Frankenstein Leaf packs 1'' lift shackles Eibach coils 5100s front 10'' 5150s rear BAMF BPV bracket Deckplate mod Elite Front bumper Magnaflow 14'' muffler Elite Off Road Rear bumper with Tire gate with jerry can and fold down table, BAMF sliders, Custom Homemade Bed, rack/roof rack, CVT Mt. Shasta Roof Top Tent, 20lb CO2 tank, BAMF diff skid custom front skid, GM CS144 140 amp alternator Blitzpro 21s HAWK side LEDs Blitzpro Custom made side mirror lights, LightForce 240 Blitz llights, Piaa 510 ION fogs, XRC8 Winch w/in cab controls,
    Technically there is not true CAI for 1st gen trucks. The best option for that is to spend 8 bucks on a deckplate and cut a hole in your stock air box.

    CAI systems are a wast of money..
     
  8. Jan 22, 2013 at 11:55 AM
    #28
    SUPERNICK

    SUPERNICK Active Member

    Joined:
    Jan 20, 2013
    Member:
    #95611
    Messages:
    26
    Gender:
    Male
    First Name:
    Nick
    Northern California
    Vehicle:
    01 XTRA CAB TRD 4X4
    STOCK for now
    Pardon my ignorance, but what makes this point valid? Is there a thread on here discussing this so we arent reinventing the wheel? If this is the case it may sway me to not waste my money
     
  9. Jan 22, 2013 at 1:57 PM
    #29
    tan4x4

    tan4x4 Well-Known Member

    Joined:
    Nov 30, 2011
    Member:
    #67982
    Messages:
    1,974
    Gender:
    Male
    First Name:
    Rick
    Folsom, CA
    Vehicle:
    99 Tacoma EC 4x4 2.7L Auto
    Bilsteins, OME 881's, 3-leaf AAL, Detroit TruTrac, 31" tires, Michelin LTX AT2, stock gears, Tranny skidplate, TC skidplate, CBI rear bumper, sliders, UltraGauge, PowerTank, CB
    This has been discussed in many threads in the past. The stock intake is already a CAI since the air is being brought in from OUTSIDE the engine compartment. Any intake that brings in air from INSIDE the engine compartment would be considered a warm air intake.

    Referring to a K&N system as a CAI is just marketing bulls**t. It may improve performance a little by letting in more air by doing less filtering. More crap gets into the combustion chambers, and the oil get dirtier faster.
     
  10. Jan 22, 2013 at 2:27 PM
    #30
    Blackdawg

    Blackdawg Dr. Frankenstein

    Joined:
    Dec 31, 2010
    Member:
    #48500
    Messages:
    50,483
    Gender:
    Male
    First Name:
    Monte
    Wyoming/St. Louis
    Vehicle:
    96.5 FrankenTaco & 03 Stock dbl cab
    BFG KM2 33x12.5 tires, Wheelers Type B rims, Allpro 1.5'' Wheel spacers w/extended thread lug nuts 2 Alpine 10'' Type Xs 2 Kicker 6X9s 4 Sony 5 1/4s Pioneer 4100 HU Sway bar removed 4 Hella 500 HIDs Frankenstein Leaf packs 1'' lift shackles Eibach coils 5100s front 10'' 5150s rear BAMF BPV bracket Deckplate mod Elite Front bumper Magnaflow 14'' muffler Elite Off Road Rear bumper with Tire gate with jerry can and fold down table, BAMF sliders, Custom Homemade Bed, rack/roof rack, CVT Mt. Shasta Roof Top Tent, 20lb CO2 tank, BAMF diff skid custom front skid, GM CS144 140 amp alternator Blitzpro 21s HAWK side LEDs Blitzpro Custom made side mirror lights, LightForce 240 Blitz llights, Piaa 510 ION fogs, XRC8 Winch w/in cab controls,
    Because a guy two post above said to possibly switch to an afe CAI to see a better increase in mileage possibly.

    I'm saying its a waste of money and you should just get a afe filter fr 40 bucks and a deck plate for 8.

    I see your new to TW. You'll come to find that pretty much every thread starts focused and ends in BS. Get used to it.
     
  11. Jan 22, 2013 at 3:55 PM
    #31
    SUPERNICK

    SUPERNICK Active Member

    Joined:
    Jan 20, 2013
    Member:
    #95611
    Messages:
    26
    Gender:
    Male
    First Name:
    Nick
    Northern California
    Vehicle:
    01 XTRA CAB TRD 4X4
    STOCK for now
    Yes very nub and yes it seems there a lot for me to learn.
     
  12. Jan 22, 2013 at 5:38 PM
    #32
    TacomaJPP

    TacomaJPP To secure peace, is to prepare for war

    Joined:
    Dec 5, 2010
    Member:
    #47218
    Messages:
    567
    Gender:
    Male
    East TN
    Vehicle:
    03 4WD TRD XTD Cab
    Snugtop Camper Brushguard
    Dyno results speak for themself:

    http://www.gadgetonline.com/AirInduction.htm

    If you don't trust Gadget, then you may as well not trust Mr. Toyota himself.
     
  13. Jan 22, 2013 at 5:42 PM
    #33
    TacomaJPP

    TacomaJPP To secure peace, is to prepare for war

    Joined:
    Dec 5, 2010
    Member:
    #47218
    Messages:
    567
    Gender:
    Male
    East TN
    Vehicle:
    03 4WD TRD XTD Cab
    Snugtop Camper Brushguard
    Agreed. This is another phenomena to consider. I believe this occurs mainly for two reasons:

    1) The "winter mix" of gasoline has more additives that give you less bang.

    2) Cold fuel has a more negative impact on efficiency than does hot air. I believe there was something to Smokey Yunick's hot vapor engine. I mean, it's Smokey-Freaking-Yunick. Everyone talks cold air all of the time (colder air, more dense, more oxygen...yeah, I get it), but equally if not more important is having heated fuel. It seems there must be a decimal coefficient in front of the temperature factor in that equation. Just guessing.
     
  14. Jan 22, 2013 at 9:07 PM
    #34
    calebdnehus

    calebdnehus [OP] Well-Known Member

    Joined:
    Jun 28, 2011
    Member:
    #59015
    Messages:
    370
    Gender:
    Male
    First Name:
    Caleb
    Arkansas
    Vehicle:
    '98 Prerunner V6--2004 Tacoma facelift
    K&N cold air intake FPIK, FlowMaster 40 series muffler, Euro Diamond clear headlights, 2003 tacoma tailights, bixenon HID headlights, 4 inch lift, pioneer headunit w/kicker door speakers(amped w/Rockford four channel), 2004 facelift, led dash light mod, painted needles, black auto shifter, leather steering wheel, ultra gauge. Plenty to come... Still
    Anyone wanna buy a K&N FIPK for a 98 Tacoma 3.4? Haha
     
  15. Jan 23, 2013 at 8:45 AM
    #35
    jaunty

    jaunty Well-Known Member

    Joined:
    Jul 8, 2012
    Member:
    #82164
    Messages:
    82
    Gender:
    Male
    Vehicle:
    99 V6 TRD Automatic 4x4
    cold weather + winter fuel additives = bad MPG.

    between ethanol and the other additives that make fuel vaporize more quickly, you're going to get worse fuel mileage. I was getting 19-22 now im getting 16-18. same driving style.

    however, if you do find a cure let us all know!
     
  16. Jan 23, 2013 at 8:59 AM
    #36
    The Driver

    The Driver Trail Runner/Barefoot Beach Runner/Snow Skier

    Joined:
    Dec 12, 2011
    Member:
    #68618
    Messages:
    1,794
    Gender:
    Male
    First Name:
    Raph, and I'm from Tampa, FL.
    Lakewood (Green Mountain), CO. I'm from Tampa. I
    Vehicle:
    '02 Extra cab 4X4 TRD SR5
    Aftermarket tranny cooler, 5100 Series Bilsteins, Class 3 Hitch.

    Quite easily found when I lived in OK, not so easily found now that I live in Denver...


    OP, it takes longer for the engines to fully warm up to "operational status" in the winter. I know my mileage suffers because of it. Also, I learned that "bad gas" from a gas station that doesn't do a lot of business (when it takes longer than 60 days to sell their gas) will eff up your trucks mileage and performance.

    Ultimately, here in Denver regular is 85 octane. After a couple of weeks of noticing how lazy my truck felt, I went up to mid-grade (87 in here) and have not looked back. This was after I threw a bottle of "REAL TECHRON" in the tank.
     
  17. Jan 23, 2013 at 9:23 AM
    #37
    Hambone155

    Hambone155 Well-Known Member

    Joined:
    Jul 9, 2008
    Member:
    #7844
    Messages:
    709
    Gender:
    Male
    omaha
    Vehicle:
    Causing Butthurt is my job
    port and polish intake manifold, supercharger, pulley for charger, lifted, tires, deckplate, (doing full engine build)
    adjust the throttle pos sensor on back of throttle body. this will adjust AFR and allow you to play with the gas millage

    clean maff with maf cleaner, clean throttle body, one can of sea foam in the tank, run some premium, check your plugs (might aswell replace its like 8 bucks) check CEL for codes related to AFR or misfire/ run lean or rich. run one can of sea foam through the brake booster line while truck is running.

    i got 23 mpg on a 3.4 modded with 9psi on supercharger after i did these things.

    but it never lasts for me. just temp
     
  18. Jan 23, 2013 at 10:58 PM
    #38
    calebdnehus

    calebdnehus [OP] Well-Known Member

    Joined:
    Jun 28, 2011
    Member:
    #59015
    Messages:
    370
    Gender:
    Male
    First Name:
    Caleb
    Arkansas
    Vehicle:
    '98 Prerunner V6--2004 Tacoma facelift
    K&N cold air intake FPIK, FlowMaster 40 series muffler, Euro Diamond clear headlights, 2003 tacoma tailights, bixenon HID headlights, 4 inch lift, pioneer headunit w/kicker door speakers(amped w/Rockford four channel), 2004 facelift, led dash light mod, painted needles, black auto shifter, leather steering wheel, ultra gauge. Plenty to come... Still
    Thanks for all the advice, I will have to do all these things until I find the cure. I will let y'all know once I do. I'm in college right now so I'll have to wait for a weekend where I can get home to my tools and other goodies. Haha
     
  19. Jan 24, 2013 at 1:21 AM
    #39
    Devout

    Devout Well-Known Member

    Joined:
    Jan 3, 2013
    Member:
    #94302
    Messages:
    182
    Gender:
    Male
    Seattle
    Vehicle:
    03 TRD 4X4
    None yet
    Smokey Yunick was a fraud. The reason his nickname was 'Smokey' wasn't because of his tobacco habit, it was because every engine he ever built burned too much oil and left a blue haze out the exhaust pipe.

    Cold engines make more power, which is why dragsters run cold engines and all performance chips have you run a cooler thermostat.
     
  20. Jan 25, 2013 at 6:45 AM
    #40
    jaunty

    jaunty Well-Known Member

    Joined:
    Jul 8, 2012
    Member:
    #82164
    Messages:
    82
    Gender:
    Male
    Vehicle:
    99 V6 TRD Automatic 4x4
    cold air is densor and therefore requires more fuel. It makes more power, but at a cost--and that cost is fuel.
     
To Top