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1Gen-TundraGeneral discussion forum for the 2000 to 2006 Toyota Tundra.
This is a discussion thread titled "Better MPG? intakes and exhausts", within the 1Gen-Tundra forum, part of the Truck Forums category.
Guys I thought installing air filter and exhaust get more MPG so that NOT true?
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Well, it depends !
The correct answer being : YES and NO
A less restrictive air intake, along with a more efficient exhaust will result in a (potentially) more efficient engine, thus possibly improving MPG.
BUT !! as your car or truck runs better you might tend to take that for granted, enjoying the new sound, getting a kick out of seeing how fast you can reach redline ........
At the end of the day, your mileage will be worse.
Theoretically, the engine being more efficient should function using less fuel. In reality, it is very difficult to prove.
Does that answer your question ?
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Boosting happily ...
List of mods ( growing Daily ): L.E.D.s inside , Camper Shell with inside lights, Back up sensors and Camera , Subwoofer and Amp , Scangauge II , Hellwig Rear Bar , Billet Rear windows hinges, K&N Air Intake , Heated Seats, Tailgate assist bar, Westin Bull Bar and Skid Plate, Under hood lights, 1.25" Spidertrax spacers in Front, 1.50 " wheeladapter spacers in back, Ultimate window tint.
Actually Yes it does. Thx Boosted!!! BTW I am new here this forum ROCKS
Quote:
Originally Posted by Boosted27606
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Well, it depends !
The correct answer being : YES and NO
A less restrictive air intake, along with a more efficient exhaust will result in a (potentially) more efficient engine, thus possibly improving MPG.
BUT !! as your car or truck runs better you might tend to take that for granted, enjoying the new sound, getting a kick out of seeing how fast you can reach redline ........
At the end of the day, your mileage will be worse.
Theoretically, the engine being more efficient should function using less fuel. In reality, it is very difficult to prove.
Someone put in here that with their Scangauge, they noticed that taking their foot off the gas down hills, shuts off gas to the cylinders. (I believe that's what I read, and below 30 mph, it just puts your truck in idle mode?)
What other things has the scangauge shown folks where they can save fuel? (This is kind of like hypermiling hints).
Just had my oil changed and the guy tried to sell me an injector cleaning for 50 bucks. He said that Toyota recomends this treatment every year. Is this true? Is this guy BSing me? Do these treatments really work?
I know that is a lot of questions, but you guys seem to know you're shizzle!
Thanks
Just had my oil changed and the guy tried to sell me an injector cleaning for 50 bucks. He said that Toyota recomends this treatment every year. Is this true? Is this guy BSing me? Do these treatments really work?
I know that is a lot of questions, but you guys seem to know you're shizzle!
Thanks
every oil change i put some lucas injector cleaner in my tank of gas when i fill up, its like $5 or less. What was involved in this "$50 injector cleaning"?
my 2cents: I have a 2001 Tundra and I'm getting ~19.6 to 19.8 mpg mixed hwy/city. I attribute that to two things, 1. Driving like an old lady 2. Having a topper shell(level w/roof) on the back. Not crazy about the way they look, but sure helps keep the down draft off the rear end.
Plus, keeping my ride maintained properly, of course.
The quick Oil change places LOVE to sell you Injection cleaners, new wiper blades, radiator flush and whatever they peddle.
Do not fall victim to those rip offs. If you car or truck runs well, maintain it per Toyota's recommendations and you will be fine.
As far as Scangauge, it displays several important pieces of worthwhile data.
you INSTANT MILEAGE, as well as Gallon per Minute, Today's mileage, this TANK's mileage ...............etc
The useful ones for me are instant and today's mileage.
As you drive you see the numbers and as you accelerate ( or not ) you see the difference it makes. It makes you a more efficient driver and it will save you gas very quickly.
You will get home as fast as before but you will use a bit less fuel in the process.
My own experience with my 2006 4X4 Tundra has been positive:
I went ( around town ) from 14 or 15 mpg to 17mpg. Nothing to jump up and down about, but significant nonetheless.
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Boosting happily ...
List of mods ( growing Daily ): L.E.D.s inside , Camper Shell with inside lights, Back up sensors and Camera , Subwoofer and Amp , Scangauge II , Hellwig Rear Bar , Billet Rear windows hinges, K&N Air Intake , Heated Seats, Tailgate assist bar, Westin Bull Bar and Skid Plate, Under hood lights, 1.25" Spidertrax spacers in Front, 1.50 " wheeladapter spacers in back, Ultimate window tint.
All a man really needs for happiness in this world is a good woman, a faithful dog, and a big-a$$ed set of tires on his truck.
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Ride: 2001 Tundra SR5, 4WD, The Lean Mean Green Machine, Lift, Front: Bilstein 5100 Adjustable Shocks w/ Total Chaos Diff Drop, Lift, Rear: 1" Wheeler's Blocks, Wheels: Chromed Factory 4Runner Rims, 17", Tires: Bridgestone Revos, 285/70R-17, Performance: Unichip, Borla Exhaust, Optima Yellow-top Battery, Flux Capacitor, Interior: Dog Hair on Back Seat, Coffee Stains on Console, Bling: TRD Grille, Westin Nerf Bars, Clear Corners & Eurotails, Debadged, Audio: Scion T1808 Head Unit, Audiovox XM Express, Shark Fin Antenna, Other: Viair 450C compressor, 2.5 Gallon air tank, Kleinn Pro Series 4-Trumpet air horns, Eye Candy: Hottie Wife in Passenger Seat, Security System: Two Very Large Dogs
I have both an exhaust and an intake and I did not gain anything mpg wise. I didnt loose any either but I did feel a difference in power when Im on it a little more and when I tow my trailer with quads. All in all Im glad I did it cause it sounds incredible but no mpg gains here.
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2003 Black AC -3" spacer lift,285/70/17 Wrangler MTR's,clear corners,gibson exhaust,stereo w/ subs,k&n fipk intake & 6,000k HID's.
I have both an exhaust and an intake and I did not gain anything mpg wise. I didnt loose any either but I did feel a difference in power when Im on it a little more and when I tow my trailer with quads. All in all Im glad I did it cause it sounds incredible but no mpg gains here.
To each his own, I guess but I never worried too much about sound. A "great sound" is really nothing more than what I call "audible bling." The sound doesn't do anything for performance anymore than putting a "turbocharged" emblem on the tailgate.
All a man really needs for happiness in this world is a good woman, a faithful dog, and a big-a$$ed set of tires on his truck.
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Ride: 2001 Tundra SR5, 4WD, The Lean Mean Green Machine, Lift, Front: Bilstein 5100 Adjustable Shocks w/ Total Chaos Diff Drop, Lift, Rear: 1" Wheeler's Blocks, Wheels: Chromed Factory 4Runner Rims, 17", Tires: Bridgestone Revos, 285/70R-17, Performance: Unichip, Borla Exhaust, Optima Yellow-top Battery, Flux Capacitor, Interior: Dog Hair on Back Seat, Coffee Stains on Console, Bling: TRD Grille, Westin Nerf Bars, Clear Corners & Eurotails, Debadged, Audio: Scion T1808 Head Unit, Audiovox XM Express, Shark Fin Antenna, Other: Viair 450C compressor, 2.5 Gallon air tank, Kleinn Pro Series 4-Trumpet air horns, Eye Candy: Hottie Wife in Passenger Seat, Security System: Two Very Large Dogs
I'm pretty sure that if you install a new intake and a new exhaust, you will need to tune your Mass Air Flow (MAF) Sensor and your Oxygen (O2) Sensors to properly reap the benefits of both the new components. The MAF and O2 sensors tell your engine how much fuel to add or subtract based on the amount of air flowing into the manifold and the amount of excess fuel being spit out the back. It's an especially complicated system on the more late model Toyotas.
After proper adjustments, your MAF and O2 sensors will be able to lean out or enrichen the Air:Fuel Ratio (AFR) to give you the correct amounts of each at all RPMs. This will be the only way to increase your MPGs and your HP/Torque numbers. Otherwise, the ECU in your truck will compensate for the extra air in as being a disturbance or a malfunction and try to enrichen the mix to make it normal as it was before, this will lead you to less MPGs and decreased performance. The ECU is smart, it takes more than a 10mm socket and a #2 screwdriver to make it do what you want.
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i gained about 1mpg with my k&n intake... ive had it for a few months now.
**** last tank of gas i wasnt too light on the gas and went four wheeling for 2 hours (very tight trail... only covered a couple miles) and still got 17.8mpg
Last summer when i didnt have the intake i never got above 17.1 I have gotten as good as 18.8mpg but dont get that usually.
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Exhaust: flowmaster delta 40 2.5" in dual 2.25" out 3" tips, no resonator
Suspension: daystar 2.5" spacers, 1.5" blocks
Tires: 265/70/17 BFG All Terrains
Stereo: Kicker Zx1500.1, 18" Fi BL, Alpine pdx-4.100, Phoenix Gold RSD 6.5" components, Kicker 6.5" midbass, Premier deh-p590ib
20% tint
Just filled up today. Last tank i checked mileage with my normal driving, 100% city. Got 10.7 mpg, 05 DC 4x4. This tank, watched rpm's and never went over 2000. Had people passing me left and right, usually have heavy foot. Mileage increased to 11.6 mpg. To me, driving like that wasn't worth only 1 mpg, I'll be happy to drive normal. Feel better now gassing on it knowing it's only a small difference, thought it would be more.
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2005 4wd TRD Doublecab- Silver Sky Metallic
2.0" SAW coilovers at 3" with rear 1" AAL, 285/75/16 BFG AT's on MT Classic II's, Pioneer Premier HU with XM, Rhinoliner, UWS aluminum truck box, Husky liners
Re: Better MPG? intakes and exhausts
2. Having a topper shell(level w/roof) on the back. Not crazy about the way they look, but sure helps keep the down draft off the rear end. 
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