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Exhaust mods 4.0 v 6 to improve power, gas mileage?

Discussion in 'Performance' started by my runner, Feb 20, 2018.

  1. Feb 20, 2018 at 4:02 AM
    #1
    my runner

    my runner [OP] New Member

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    Hi, I just bought a new 2018 4runner, 4.0v6, and would like to know if anyone has replaced exhaust, or muffler and increased the power and or gas mileage. is less back pressure a good thing to do on these? I know some v6 engines it will have the reverse effect.
     
  2. Jul 6, 2018 at 4:09 PM
    #2
    Barcelona Trail

    Barcelona Trail New Member

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    Colorado in Winter - SoCal in Summer
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    Bilstein 6112 & 5100 - Built Right UCAs - AFE Intake, TBS, & Exhaust - Pedal Cmndr - Icon Rebound - 285 BFG KO2
    Today, I purchased the AFE Intake, Throttle Body Spacer, and Exhaust (20% off through AFE web). Suggested +36HP total. Intake is on back order until next week. Will post pics and thoughts once installed.
     
  3. Jul 6, 2018 at 5:40 PM
    #3
    JBTRD

    JBTRD As usual, saying something stupid

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    These trucks are not race cars, they are meant to be a serious off road truck. If you really want power there is a super charger if you want to shell out 6k. Other wise preformance mods other than that dont really provide much to these trucks.
     
    Trail Runnah and 4runningMan like this.
  4. Dec 5, 2019 at 8:47 PM
    #4
    Blue 4ever Runner

    Blue 4ever Runner New Member

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    Blacked out badges, window deflectors, smoked 3rd brake light. I have a Borla muffler on order as well as some color matched engine cover stickers. I'll be painting the stock wheels soon as well. Falken tires in the fall as well.
    Barcelona Trail likes this.
  5. Apr 2, 2020 at 1:35 PM
    #5
    peter2772000

    peter2772000 New Member

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    GTR high and low beams, Victory rear carrier
    And????
     
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  6. Apr 3, 2020 at 3:39 PM
    #6
    Barcelona Trail

    Barcelona Trail New Member

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    Bilstein 6112 & 5100 - Built Right UCAs - AFE Intake, TBS, & Exhaust - Pedal Cmndr - Icon Rebound - 285 BFG KO2
    Couldn't be any happier. My truck lives in 3rd & 4th gear pulling between 3500 and 5000 rpms (between 5-10K feet).

    20180713_163727.jpg
    20180713_163853.jpg
    20180717_085719.jpg
    20180713_130440.jpg
     
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  7. Apr 4, 2020 at 4:44 AM
    #7
    peter2772000

    peter2772000 New Member

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    Kewl, thx for posting!!!
     
    Barcelona Trail likes this.
  8. Apr 4, 2020 at 5:15 AM
    #8
    kami

    kami New Member

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    Had the Gibson cat back and TRD CAI. No graphs to prove it, but the butt dyno didn't feel any difference. I will say, I saw an average MPG increase from 19.4 to 20.1 over the course of 1000 miles.
     
  9. Apr 4, 2020 at 8:34 AM
    #9
    Dougie

    Dougie New Member

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    More torque is never a bad thing to have on the trail.
     
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  10. Apr 4, 2020 at 9:29 AM
    #10
    akmerle

    akmerle New Member

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    Best bang for your buck will be pedal commander / sprint booster. Only $300 but greatly improves throttle response and power in the initial part of throttle input. You won’t find anything close to it that improve the day to day drivability at that price point.

    Top end gains from basically all exhaust and intake mods (outside of supercharger) are negligibly felt, and predominantly just placebo effect of the noise they make.
     
  11. Apr 4, 2020 at 9:57 AM
    #11
    Barcelona Trail

    Barcelona Trail New Member

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    Colorado in Winter - SoCal in Summer
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    Bilstein 6112 & 5100 - Built Right UCAs - AFE Intake, TBS, & Exhaust - Pedal Cmndr - Icon Rebound - 285 BFG KO2
    Relative to what these trucks are capable of with aftermarket mods, they drive like ice cream trucks off the dealer's lot. Anybody who denies that is well... in denial

    A 4R requires a minimum $3K and at times upwards of $10K to make it look, drive, and perform offroad the way they are capable of (tires, wheels, suspension, rock sliders, headlights, additional lighting, roof rack, bumpers, storage, engine & exhaust mods, etc). There are a number of different vehicles in the 35-40K range that I might choose over a bare bones stock 4R
     
    Last edited: Apr 4, 2020
  12. Jun 23, 2021 at 1:08 AM
    #12
    Letsflyman

    Letsflyman New Member

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    I keep forgetting that a roof rack is required for my 4Runner to go offroad. Maybe the 1600 dollar rack I saw on Amazon will do the trick.

    :rofl:
     
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  13. Jun 23, 2021 at 3:39 AM
    #13
    Trail Runnah

    Trail Runnah New Member

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    Unfortunately these type of mods tend to make power at the top end, where the motor can use the extra air flow.

    The only thing that I would kind of like to try is the S&B cold air intake. I know the factory intake is cold air already, but I've read enough people say good things about the S&B that it intrigues me.

    I also feel like this motor makes plenty of horsepower, it just lacks in low and torque. I wish it had more grunt in the 2,000 RPM range, where mine spends most of its life.
     
  14. Jun 23, 2021 at 4:41 AM
    #14
    Thatbassguy

    Thatbassguy New member? Really??

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    Haha! I currently have no roof rack. I'm surprised I don't get stuck the second I leave the pavement.

    The only necessary modifications for off-roading are getting real AT or MT tires, and armor if you're playing in the rocks.

    Most of the things listed in that post are good to have, but headlights and exhaust mods don't do anything for off-road capability.

    I'd be interested to know what other $35-40K vehicles, aside from a Wrangler, @Barcelona Trail would prefer over a stock 4Runner.

    A supercharger, or turbo, is the only thing that is going to significantly improve your low end torque.

    I would love to find an intake that actually improved fuel economy and/or power, but the general consensus is that they're nothing but noise makers.
     
  15. Jun 23, 2021 at 5:32 AM
    #15
    canadian.bacon

    canadian.bacon H9 halogen is the best led bulb

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    I call BS. The manufacturer already has the vehicle in the sweet spot for mpg and performance. Or you think their engineering team said “screw it, leave it like this, let go to lunch “?
    A new air filter will not make a difference, the engine is not starved for either air or gas. A pedal commander will not affect that either. a muffler will most likely mess with the optimal back pressure.
    There are no performance modes for this vehicle unless you supercharge it. Period.
    You wanted better mpg? Buy a different vehicle.
     
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