4x4 TUNDRA MPG

[TUNDRA786]

Originally Posted by Billy Bob

This is a dumb argument. If Toyota could get proven increased mileage by selling Tundra's with these options you can bet your last dollar they would. They are under great pressure from the government to increase mileage on ALL their vehicles and if this would work on their trucks it would be STANDARD equipment.

Damn skippy

[TUNDRA786]

Originally Posted by TundraBay

I have one word for you: Naive
Toyota sells the aftermarket stuff because people want it. Why do people want it? Because they want the FEELING they're doing something COOL and UNIQUE. What you're doing (sorry) is following the crowd.
There was a time when customizing your vehicle and engine was performance enhancing, but that time is gone, at least where economy is concerned.
If Toyota didn't sell custom add-ons, someone else would.
I'm not talking about a supercharger now: that would definitely make a difference in power anyway (maybe MPG too, I'm not sure). But it's very expensive, around $5G so they're not just going to throw that on.
I added a tonneau cover: difference in MPG: zilch.
.
People adding to their trucks and charting performance changes need to be very rigorous in their science, make one change at a time, calculate fuel flow with accurate fuel flow meters, account for differences in fuel age, air temperature, barometric pressure, driving style, etc., etc., and they'll find miniscule improvements if at all.
If you want good mileage, don't buy a truck.
If you want to get there regardless of weather or road conditions, you have the right vehicle.
If you want better mileage stay out of the accelerator, drive <65MPH, keep tire pressure at max.
that's my rant for the day

Im sure a CAI, Headers, and Exhaust would help a little on your HP but i dont know if it would effect you MPG Signficanlty

The Tonneau doesnt do sh**. New trucks are made in a manner to be more aerodynamic. In older trucks it might have helped more. The engineers at Toyota arent on crack that there gonna make the bed so un aero dynamic that a tonnaue is going to increase your gas mileage significantly.

There might be other factors contributing to your gas mileage or you just got da*m lucky

[rmcrox]

According to some of you, Toyota racing Development has come out with performance accessories that have no affect at all on performance? and I'm sure you all have the evidence/ reseacrh to prove the Toyota engineers wrong. Heck if you have maybe we can file a class action for false advertising?

In this case it would be sad to know that many forum members are purchasing these products just to throw money away. Even though many forum members have posted time slips referencing improved times with these mods these do not count (Along with several others reporting better MPG). I am curious if you yourself have added any of these accessories or know what research has been done to prove TRD wrong?

[TUNDRA786]

These performance acessories are meant to increase power preformance. Does Toyota advertise that they also give better gas consumption?
Everyone knows that they increase power.
Calm down no need to get your panties in a knot

[yokota85]

The MPG does not get better with more miles. I started with 16-19 depending on the trip now I have almost 7,000 mules on the truck and get 13 MPG. the range per tank went from just over 400 miles when I bought it down to around 334. might be the ethanal mix taking it down.

[TUNDRA786]

that sucks....

[Billy Bob]

Originally Posted by rmcrox

According to some of you, Toyota racing Development has come out with performance accessories that have no affect at all on performance? and I'm sure you all have the evidence/ reseacrh to prove the Toyota engineers wrong. Heck if you have maybe we can file a class action for false advertising?

In this case it would be sad to know that many forum members are purchasing these products just to throw money away. Even though many forum members have posted time slips referencing improved times with these mods these do not count (Along with several others reporting better MPG). I am curious if you yourself have added any of these accessories or know what research has been done to prove TRD wrong?

Now wait a minute. As you don't know I have a auto-mechanics degree from Alfred State and the first thing you learned is performance is MUCH different than economy. I am NOT disputing some of the TRD options wouldn't enhance performance. What I am disputing is they have NO effect on increasing your mileage.

Enhancing your exhaust is one the better things and it's pretty much cost efficient to increasing HP or performance. Letting the engine breath better will increase the performance but will actually lessen your mileage. The more and faster a combustion engine breaths the faster it can consume more fuel and that's what's increasing your HP/Performance.

NONE of the options that you listed as adding to your truck has any effect on INCREASING your mileage other than in your own mind. Sorry but that's the truth.

[rmcrox]

I was leaning more towards the difference in HP then MPG when discussing these accessories. Although I personally have noticed a difference in my MPG after adding my Tonneau on trips where I am going 80MPH for long periods of time. However there are some items that Toyota could have added to increase fuel efficiency such as: Direct fuel injection systems or an Integrated Starter/Generator made by Delphi. However these additions would greatly add to the price of the truck, and Toyota elected not to use them. My other point was that there are things that toyota will not add because they make too much money on them in the aftermarket ex: bedliner.

[Rickkari1]

Originally Posted by GOOD_LIFE

I just turned 500 miles today and was getting about 13.5. It was about 11-12 for the first tank and has been going up since then. I've heard of guys with these trucks getting up to 16.5. I have a 07 DC limited 4X4 and plan on adding an AFE intake, DC headers, and a cat back exhaust. Not sure about the exhaust yet but I would like to have a chambered muffler and an H-pipe. I was also thinking about an underdrive pulley and throttle body spacer. I just want to find a TB spacer that doesn't whistle. Also, in regards to the pulley, I don't recommend under driving the alternator but in Alaska I don't even need my A/C. This is all less stress on your engine and improved efficiency thus, more power and mileage. Also, weight and gears and aerodynamics play a part but I don't think you want to go that far. If so, PM me and I'll see if I can help.

I'd be happy if I get 16 with these mods but I'm also doing it for the power. Hey, it beats the 10mpg I got in my last truck.

Hey guys,
How many of us with "lower than we wanted" mileage, have changed to either a mud terrain or a true all-terrain tire? I'm just curious. I have 9k miles and have never broke 15mpg and I have the Toyo 275/70/18 M/T's.

Rick

[rmcrox]

I have the standard BF rugged trails I'm not sure they are considered a true all terrain tier though.

[TundraBay]

OK Supercharger: Increase peak HP from 381 to somewhere just shy of 500.
.
CAI: HP up 3-5, Peak Torque up 5-10 ft/lbs. So 1-2% better.
ON the plus side, it does SOUND faster!
(Probably better at high altitudes where significantly more air is needed)
Cat-back Exhaust (TRD) adds 9 peak HP (about 2.5%)

It DOES give you a nice deep throaty sound!
Torque PROBABLY reduced slightly
Your 4 to 2 to 1 exhaust already is optimal for this truck.
Throttle body spacer: zilch for this engine
.
Bottom line, you can pay for "customization" but don't tell me to prove that this sh!t doesn't work. Show me some reliable sources that demonstrate it DOES actually significantly improve performance (HP, torque, or mileage, or preferably all three!)
.
It works for its' intended purpose: make money for Toyota. I'm not saying you get NO improvement at all with these changes, but you're not getting much.
You need to spend a LOT of money for significant performance improvements.
The SC would get my vote; the rest is window dressing. Just because it sounds fast doesn't make it fast.

[dexterL]

had 5 k on her when i left montana monday morning. averaged 15.3 the whole 859 miles trip to denver. most of the driving was between 75-85 with 2 jaunts up to 115, a bunch of hard hard wind blowing going b/w 45-70 and some 4x4

[tacos3]

I've got an '06 with a tonneau and I get 13 around town and 16 on the hwy driving it very conservatively. It's a sad state when I have to drive my 350 hp '99 SVT Cobra(which I drive it like I stole it) as my "commuter" car as it gets 15 around town and 21 on the hwy. I never thought a Tundra would get crappier gas mileage than my Cobra.

I might have to try the MAF sensor cleaning....

[Eviltwin05]

FWIW: Don't forget MPG will suffer through the winter as the oil companies switch to higher oxygenated fuels.

[PS-RagE]

Like the others, I was getting around 15mpg in town this summer. Now I'm averaging 10mpg. Combination of winter gas, extra idling and more use of 4x4