Mpg Mods?

[perf0rmance]

I am no engine tuning expert… but won’t that just lean out the motor unless you increase fuel for the added air its moving?

Id figure if getting 3 MPG out of the thing was that easy… the OEM’s would have did it for you already assuming isn’t not causing some negative effect as a trade-off.

Leaning it out, assuming it was too rich (which is typical), will save gas.
Adding a less restrictive exhaust could help with taking in more air, since more air can exit - means more power produced. Negative effects would be dBs and potential low-end effects due to due lowered backpressure.

 

[mo_mo]

I am no engine tuning expert… but won’t that just lean out the motor unless you increase fuel for the added air its moving?

Id figure if getting 3 MPG out of the thing was that easy… the OEM’s would have did it for you already assuming isn’t not causing some negative effect as a trade-off.

Can only work in open loop. This engine rarely operates in open loop. During warmup, and maybe briefly under fast changing - high revs, and that's about it. So during normal acceleration and cruise, it's nearly impossible to trick the system. The computer will just adjust (trim) and lean/rich itself out based on the multiple O2 sensors for closed loop operation.

 

[1jzgte]

Leaning it out, assuming it was too rich (which is typical), will save gas.
Adding a less restrictive exhaust could help with taking in more air, since more air can exit - means more power produced. Negative effects would be dBs and potential low-end effects due to due lowered backpressure.

too lazy to dig up an old thread but other members have tested that the 4runner runs very optimal even during cold starts. Not pig rich at all.

 

[El Dusty]

Did you trying them separately? As in, would the MAF alone give better MPG or the intake?

Regarding pedal response - have you tried a pedal commander? If so, how did that compare?

I ran the intake alone for about 6 months and besides noise under load I noticed no mpg or power change. When the MAF calibrator was installed my mpg change was realized. I don't believe either unit by itself makes a difference tbh.

Just to note the guys at URD have custom fuel mappings pre-installed to the calibrator for your intake / exhaust setup when your purchase. You can always flash these via usb to the unit later if you change your system down the road.

And lastly yes, I had the pedal commander before I modified the intake and MAF calibrator. I ran the PC off after the MAF C install to see the difference. It is noticeable, compared to the PC Id say its like putting the PC in City -2 or -3. Now with both systems I only run the PC in City -2 around town and I find myself accelerating too fast pretty often. Its a great combo although redundant. Nice being able to tune the throttle offroad and when I let someone with a leadfoot drive I tune it down a few notches via bluetooth secretly.

I also bought a throttle body spacer from AFE and Im trying that out now. Absolutely no noticeable changes from the thing but the intake system whistles a bit almost like a turbo

 

[Rapid_Amble]

This has been discussed approximately ONE MILLION times in the past. You should search before posting things like this. There are very few viable options to improve MPG in a 4Runner. The best option is to use a lighter, stiffer, lower profile tire. Next would be to decrease cross sectional profile of the vehicle to reduce drag, meaning a shorter "smoother" vehicle. In order to accomplish this you would want to remove your roof rack, install a lowering kit, narrow tires, etc. Most people aren't going to do ANY of those. The next best is to decrease overall vehicle weight however possible. Remove the rear seats, radio, AC system, empty the glove compartment...you get where I'm going with this. There are no magic MPG cures like there are in the diesel world with engine tuning, etc. I've never found an additive that improves MPG enough to even pay for itself, though engine longevity is another issue to consider.

I think these give you more power though...
Amazon.com: 2 Borla Exhaust Muffler Decals: Arts, Crafts & Sewing

Pretty much this. Any mod that promises fuel gains (e.g., lightweight wheels) won’t pay for itself in terms of fuel savings even if you drive the thing until the wheels fall off.

Get low resistance street tires, air up and try to hypermile lol.

 

[fkheath]

With gas prices creeping up and new products out, what are some mods to improve MPG on 4runners?

With the government fuel economy standards, there is HUGE pressure on auto manufacturers to improve the gas mileage of the vehicles they manufacture. If it was possible to get significantly better MPG on the 4Runner, Toyota would have put it in.

Thus, there is not much you can do beside driving carefully.

 

[patkelly4370]

Limit driving to downhill only.

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[fkheath]

Limit driving to downhill only.

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Actually, I have found that driving only with a stiff tail wind works the best.

 

[DallasTRDPro]

I just got 11.5 mpg from Amarillo to Albuquerque with 30-40 mph sustained headwinds. It made my trip to Utah very expensive. Pretty soon the 4R might be a very bad vehicle for me to drive. I'm somewhat considering trading my Pro for a Rav4 Hybrid. I have some very long trips coming up in the near future and $3 and $4/gallon gas prices is getting too rich for me.

 

[Sconnie]

Oil barons hate THIS simple hack! Tornado Air™ — More Power, More Mileage!

 

[alphabeast]

The "remove all your mods" mod should do the trick.

 

[Humble Leader]

got rid of the 2nd and 3rd row seats, cut the floor and installed a larger fuel tank. triple the OEM size

 

[perf0rmance]

too lazy to dig up an old thread but other members have tested that the 4runner runs very optimal even during cold starts. Not pig rich at all.

That's good to know... I had no idea, which is why I added "assuming it was too rich" LOL

Cool handle btw.... that was once my license plate here in CA. I kept it the same even after I went 1.5JZ... and then left the plate with the new owner.

 

[Fermn]

I just got 11.5 mpg from Amarillo to Albuquerque with 30-40 mph sustained headwinds. It made my trip to Utah very expensive. Pretty soon the 4R might be a very bad vehicle for me to drive. I'm somewhat considering trading my Pro for a Rav4 Hybrid. I have some very long trips coming up in the near future and $3 and $4/gallon gas prices is getting too rich for me.

Yikes !

 

[Brick Sprickly]

Thought about doing the Turbo Encabulator mod but, given the nature of the work, decided it a bit too complicated for me as I'm a beginner when it comes to magneto-reluctance.

I hear the theoretical MPG savings would be substantial.

 

[rhadam]

One of my closest friends was an engineer with Toyota and then Tesla, know a couple guys still working for Toyota. I've asked about MPG and possible upgrades.. they have all said there's really not much you can do that would make much of an impact. They have always been skeptical of things like MAF calibration, intakes, etc and the "supposed" results.

Personally, I just keep the tires aired properly for street driving, keep the filters clean, regular oil change, keep excess gear at home, and the most important thing.. watch my damn lead foot on the accelerator.

 

[Sconnie]

Thought about doing the Turbo Encabulator mod but, given the nature of the work, decided it a bit too complicated for me as I'm a beginner when it comes to magneto-reluctance.

I hear the theoretical MPG savings would be substantial.

You can do it man. Just don’t forget the crystals.

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[mmike87]

Just make extra cash pulling Priuses from the ditch when it snows.

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[EddieV4runnin]

Better MPG on a 4Runner :frisky:

 

[1jzgte]

That's good to know... I had no idea, which is why I added "assuming it was too rich" LOL

Cool handle btw.... that was once my license plate here in CA. I kept it the same even after I went 1.5JZ... and then left the plate with the new owner.

no worries.. we all assumed that cars run rich at cold start until its warmed up correct? someone here w/ the right tools was able to measure that it wasnt the case at all.