Any useful MPG mods on 4.0L?

Which other 4.0L? My week with the Frontier with the VQ40DE saw similar fuel milage.

 

i feel as though its right on par with everything else thats out there in the similar vehicle market. id gladly take a small hp / tq / mpg hit to have a reliable toyota motor.

 

Being a truck, I would think the camshafts are set up for durable, reliable low end power and not high rpm.

For fuel economy I play a game...see how little I can touch the gas pedal.

If you really want to go fast it's going to cost plenty.

If you have an automatic transmission $ for $ a shift kit will make your truck run like a scalded dog compared to what you have.

 

You are not giving up on much. The torque curve of the 1GR is very usable. This is why the Taco seems more peppy and turns in better accelerate numbers than the Frontier, despite having less peak power.

 

33's

 

I have had a few Rangers with the 4.0, and they got better mileage. My 2011 Ranger got 2-4 MPG better with the exact same tires and load (watching ScanGauge and calculating every tank). To be fair, The Tacoma is still breaking in (only 2700 miles), and it does have a little more power. The best way I have found to increase MPG’s is easy acceleration and coasting to stops and on off ramps, etc, along with keeping the speed down on the highway.

 

You have that completely wrong for performance, you're sucking thin air and can't make as much power as at sea level. You have significantly reduced power at 9600 ft.

Athletes train at high altitude so they are used to thin air which is difficult, then go to sea level to win races were it's relatively easy.

How many miles are you putting on in a day/week at 35-40 miles?

 

Yeah I got the exact ratio of 1.075 from the tacoma world tire calculator and on a different thread but thank you!

 

high elevation is harder so it's worse power/mpg, so do you think a warm air intake would help me then so the air isote dense from the heat?

I go through a tank for in a week to week & half, so about 20 miles a day on average? Maybe less some days

 

I'm at 5300 ft in Boulder, power is down but mpg is up with thin air. Less power + less fuel. Cold air is more dense, you have it backwards again.

Your commute sucks and you don't drive far, not much you can do.

 

Just a little confused, how can it be more dense and be thinner air?

Edit: never mind, the more dense the less space it takes up, making it "thinner"

 

No, thin as in less molecules per a given volume. Colder air has tighter packed molecules but even with it typically colder at higher elevation, the lack of atmospheric pressure at altitude allows the molecules to be less packed together. Try snorkeling with a 1' snorkel then do it with a 6' piece of pipe. The pressure at depth is much great and is enough that ur diaphragm will actaully have to work to pull air in in stead of air being forced in by outside pressure. Or if u dont have a 6' pipe, u can take a milk jug full of water and poke a hole close to the top, then poke one close to the bottom. The stream at the bottom will be much stronger bc of the pressure provided by the weigh of the water above it.

 

Higher altitude = less dense = thinner.

Hotter = less dense = thinner.

High cold air = more dense than high hot air.

Cold sea level air = way denser than you.

 

So wouldn't I benefit from a warm air intake then? Because it'd be the less dense and thinnest, resulting in less fuel consumption?

 

The stock tires on the Off Road TRD are 265/70-16 (31") and the speedometer reads fast with them... ie, letting you think you are getting better mileage than reality.

By going to 265/75-16 (32"), the speedometer reads correctly.

Obviously a larger tire than 32" will give a worse than real MPG figure.

 

So you're telling me that when I had the stock 265/70/16 on my truck I should of been multiplying my MPG by like .96? So the 13.8mpg average, I was getting actually closer to 13.2 (ish) mpg?

 

The speedo is off with stock tires, but i found the odo to be on, and now w/ 265/75 speedo is on, but odo is slow a bit. Check it with a gps or map quest or a long interstate trip and see if u dont find the same to be true

 

Depends, my guess is you are flooring it most of the time on hills, do you want to make less power? It could make a slight difference with hot air, but not much.

If you are flooring it or near flooring it you are into open loop and probably very rich at your altitude.

 

Not at all actually, truck barely reaches over 3,000rpm & the only time I get there or a little higher is pulling out in front of someone and having to get up and go so I don't get rear ended or to pass someone, but usually keep it under 2,000rpm. So it's not my driving habit, which is what originally sparked the inquiry on how to improve it

 

So when I went 100miles with the stock 265/70:16 tires, did I go 100 miles? Or less/more?