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MPG Mods

Discussion in '4 Cylinder' started by kylefrdavis, Apr 20, 2009.

  1. Aug 15, 2013 at 4:47 AM
    #761
    shunut

    shunut Active Member

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    So do they hurt your MPG? or Do they do nothing either way? And what about just removing the secondary filter and running an OEM filter?
     
  2. Aug 15, 2013 at 2:04 PM
    #762
    91r100gs

    91r100gs Understand the Voice Within

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    That has been my best combination. although removing the secondary filter can cause problems in areas where emissions testing is done. Probably not to many inspectors would catch that.

    The main reason I put my OEM filter back in was that when cruising on the interstates, the AFE ProDry S made a moaning noise, like a cat in heat. Gets to be annoying on long trips.
     
    Last edited: Aug 15, 2013
  3. Aug 15, 2013 at 3:33 PM
    #763
    shunut

    shunut Active Member

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    I brought my GTI through inspection here in AZ a little over a year ago. I have a CAI, 3" turbo back exhaust, aftermarket diverter, ECU Tune and various other mods, and the inspector didn't say a word. So, I think if I removed the secondary air filter, as long as it doesn't mess with any of the readings they pull via the OBDII port, I should be good.
     
  4. Aug 15, 2013 at 4:29 PM
    #764
    91r100gs

    91r100gs Understand the Voice Within

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    Like I said, a slim chance but making sure you are aware of it.
     
  5. Aug 15, 2013 at 4:30 PM
    #765
    worthywads

    worthywads Well-Known Member

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    They don't hurt, they really have no mpg effect since the throttle plate is much more restricting than the air filter unless you are running at full throttle all the time.
     
  6. Aug 15, 2013 at 9:03 PM
    #766
    tooter

    tooter play every day

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    2012, std cab, 5 lug, 2.7, 5 speed
    Built for maximum low end torque, tooter II.VII intake manifold spacer, LCE long tube header, Injen long tube intake, 2,900 rpm torque peak.
    When I changed out my stock intake...

    [​IMG]

    ...out of curiosity I took a couple of measurements.

    Throttle body bore diameter: 61mm
    Intake air horn diameter: 61mm

    Conclusion: no restriction :)

    I just like my Injen intake for the BWWAAA when you step on the gas, because my stock muffler doesn't make any noise. ;)
     
    Last edited: Aug 15, 2013
  7. Aug 16, 2013 at 12:32 AM
    #767
    Gmantruck

    Gmantruck Member

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    Hi I just purchased a new 2013 tacoma prerunner and I'm looking for some
    Globe Headlights. Does anyone know a good place to buy? Also if you have upgraded you headlights how was the install?
     
  8. Aug 16, 2013 at 1:59 AM
    #768
    jdmdcfan

    jdmdcfan Well-Known Member

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    As far as I know an intake doesn't help MPG. More air=more fuel. Honda Civic VX's get 45+ mpg with an intake tube the size of a roll of quarters lol.
     
  9. Aug 16, 2013 at 4:57 AM
    #769
    shunut

    shunut Active Member

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    Ok, so I won't wasted the money on a CAI or expensive drop-in air filter. Are there any good MPG mods that are worth the money?

    I'm slowly reading through the thread, but haven't made it all the way through yet. I drive as conservatively as I can already, only time I go over 2000rpm is on the Freeway, and that is only because at 65mph (speed limit) I sit at about 2200rpm. I actually changed my work hours so that I would miss traffic both ways, so I'm not sitting in traffic.
     
  10. Aug 16, 2013 at 7:38 AM
    #770
    toyodajeff

    toyodajeff Well-Known Member

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    General lee horn mod, Bilstein 5100's and maxtrac 4 inch lift spindles. omd spring rebuild w/ s10 springs kenwood h/u and cb, warn trans4mer brush guard level 8 tracker wheels and cooper s/t 33's
    Maybe add a bed lid. And drive a little slower.
     
  11. Aug 16, 2013 at 9:31 AM
    #771
    tooter

    tooter play every day

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    2012, std cab, 5 lug, 2.7, 5 speed
    Built for maximum low end torque, tooter II.VII intake manifold spacer, LCE long tube header, Injen long tube intake, 2,900 rpm torque peak.
    That's an interesting principle. Getting maximum mileage through minimum engine rpms. Old standard low performance economy cars did the same with small air horns on their air cleaner assemblies.

    My 1972 Datsun 510 had one of these on it...

    [​IMG]

    It also had a curved shield protecting the air filter at the entry so that the air would travel in a circle before going through the air filter. This made dirt particles fall out of suspension while still outside of the filter element. Many older trucks use round canister centrifugal air filters.
     
  12. Aug 16, 2013 at 7:45 PM
    #772
    Ghostrider01

    Ghostrider01 Well-Known Member

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    2013 DCSB Baja, I have 5000k on it now, was averaging 16.0-17.5 mpg. I am currently driving a 4 hr one way trip every weekend for work. Changed the oil to royal purple in hopes to pick up a mpg as it did in my previous vehicle. I didn't see a difference. Then the other weekend I changes the diffs and transfer case oil to Royal Purple. Picked up a solid 1.5 mpg. I know lots of variables can make that kind of change but have kept most the same. Taking the same route every weekend, leaving around the same time, using the grade and brand of gas, setting cruise at the same speeds. Cruising 80-85 on interstate and 70-75 on FM roads. I'm am note a lug footed driver so I am pleased with seeing 18-18.5 mpg. I will post if the results go down. I've burned through 2 tanks with the changes.
     
  13. Aug 17, 2013 at 8:18 AM
    #773
    bbatka

    bbatka Member

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    Amsoil in both differentials and transfer case..... 1.3mpg gain. Amsoil signature oil and I'm getting 2 mpg over stock.
    That's what my post was all about. I noticed the biggest difference when I swapped to synthetic in the diffs and trans case too. people really don't realize how much drag those extra gears create- so reducing that friction gets you a little farther down the road.

    The second benefit of synthetic in the engine is the longer lifespan of the oil. My last oil change was at 15,000 miles. That's well over 3 times the regular oil change interval. The oil didn't cost 3 times as much, so I'm spending less to have driven those 15k miles.... get it? The money I would've spent on oil changes in the mean time have instead bought more gas. That isn't MPG per say, but MPD...Miles Per Dollar.
    MPD... that's what we are all trying to increase.
     
  14. Aug 17, 2013 at 9:19 AM
    #774
    tooter

    tooter play every day

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    2012, std cab, 5 lug, 2.7, 5 speed
    Built for maximum low end torque, tooter II.VII intake manifold spacer, LCE long tube header, Injen long tube intake, 2,900 rpm torque peak.
    That's another reason I run an intake with no box.

    [​IMG]

    It's totally quiet in normal driving because there is no resonating box, and you only hear it when your foot is to the floor. ;)
     
  15. Aug 17, 2013 at 2:29 PM
    #775
    Coast2Coast

    Coast2Coast Well-Known Member

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    There's a forum ecomodders.com where a bunch of hardcore folks do things like install grill blocks, smooth belly pans, kill switches, etc to get ridiculous mileage. I used to hang around there a bit when I had a diesel. Theres some good driving tips to live by on that site if you're into saving gas.
     
  16. Aug 18, 2013 at 12:01 AM
    #776
    shunut

    shunut Active Member

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    So change my differential and trans fluids to synthetics, any particular brand of synthetics better than another? In the past I've pretty much stuck to Valvoline, for synthetic engine oil at least. I always use synthetic engine oil in my vehicles, but just hit 1000 miles in my Tacoma, so it has yet to have an oil change.
     
  17. Aug 18, 2013 at 3:40 PM
    #777
    bbatka

    bbatka Member

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    Amsoil in both differentials and transfer case..... 1.3mpg gain. Amsoil signature oil and I'm getting 2 mpg over stock.
    Do some research on the interval changes of each gear lube. Stock dino-lube says change diff lube at 75k miles. I could not find info on Redline or Royal Purple, so I went with Amsoil gear lube. Their "Severe gear" is rated for 100kmiles, and the "Long Life" lube is supposedly good for 250k. The money was about the same, so Amsoil it was for me.
     
  18. Aug 20, 2013 at 4:50 AM
    #778
    shunut

    shunut Active Member

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    I'll look into the gear lubes...

    Took out my secondary air filter last night. Probably going to change out the rear diff oil this weekend.
     
  19. Aug 21, 2013 at 4:57 AM
    #779
    shunut

    shunut Active Member

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    Differential (gear) fluid is no problem to find in synthetic. What synthetic should I use for the tranny? Having some trouble finding a replacement for the Toyota ATF fluid.
     
  20. Aug 21, 2013 at 5:02 AM
    #780
    91r100gs

    91r100gs Understand the Voice Within

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    Factory bed mat, TacomaWorld.com sticker, EGR In-Channel Vent Visors, AFE ProDryS drop in air filter
    If it were mine I would keep using the Toyota ATF. It will keep your warranty intact, and most likely a synthetic.
     
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