Best MPG mods you've found
 

What are the best MPG mods you've been able to find other than a light foot? I just bought my truck for mileage because I drive over 100 miles per day for work, 95% interstate. I had heard an exhaust was good but I can't find a thread relating to the best style to go with. Any ideas would be great! Thanks!

1991, V6, ext cab, 4wd, 31x105 General Grabber AT2s, 147K miles

I put "Marvel mystery Oil" in my gas- it makes a small, but noticeable difference in MPG (1-2 mpg more) It quiets it down a bit too. (22re)

I found a vacume line that was disconnected on my 22re, when I plugged that back in I went from 16.5 to 19mpg :great:

Get a job that pays more.

open up the exhaust.. with like a turbo muffler from borla or something like that.. open intakes are good.. change your oil, air filter, spark plugs and all that and those can help with gas mileage

Use Seaf foam, and Use lucas FI Cleaner.that made a big difference in my gas mileage

2wds get significantly better mpgs than the 4wds. tires can make a big difference too.

dont forget that right foot, one of the biggest factors, mines pretty heavy :hillbill: 18mpg in my 87

research the ISR mod..get ma decent 2.25" exhaust with a muffler of your choice..and if you have the money..i've heard headers help just a lil too..but they are expensive ($450+)

uhhm...get ya a set of 4.56's for those 31" tires..or get some stock size tires..

do the normal tune up..plugs..wire..cap..oil..flush your motor,

go to full Synthetics in EVERYTHING (tranny, t-case, both diffs, and motor)

make sure all of your injectors are flowing nice and good..not leaking or anything..

make sure all your vacuum lines are good..don't wanna vacuum leak..lol

and you could probably lean out your air/fuel mixture a little..just for the extra bit..and then be easy on that right foot..

Do that stuff and you might be looking at 20-24mpgs on the highway

There's your problem. 3.0L = poor MPG. Tell us what you are getting right now, and we can tell you if it's normal or can be improved upon. Manual or Auto?

I got around 16 mpg city and up to 21 hwy on 31's in my pickup with a Manual tranny. With the 33's I'm getting around 14-15 around town and maybe 18 hwy. Tune up is probably the best thing you can do if it hasn't been done recently. Keep up on fluid changes.

I'm getting around 15mpg right now averaging 60-70mph.........I know that isn't necessarly bad just looking at ideas to maybe get more.........I was getting 11-12 out of my old chevy so I'm not disappointed just looking at ideas for more.

edit - manual

throw a 22re in that badboy and youll get an increase :)

And get left behind in traffic :D


Aggressive tread and larger then stock tires will effect mileage ALOT

Just do regular mainentince, make sure she is running good and she will get good mileage.

I was able to get 21mpg from my truck on the hwy last summer...

how come everyone says 22re's are slow?
my brothers 93 3.0 is the definition of slow, mine a rocket compared to it, but my moms 98 3.4, oh my, i love it. but its an auto :(

im getting like 15 mpg rightnow :think: i have a 22re too? about 350Km to my last tank and thats all in town driving and hills. im thinking somthing is wrong lol maybe a vacum leak? my frined gets 470Km to his tank and his is a 3.slow 4runner?? o and his are all highway

Right foot is the only thing that has consistently improved mileage, as it taking out the tool box, hi-lift, 5 gallon water jug, chains, propane etc that seems to follow me around. No point in going above 35psi tire pressure as it does not affect mileage above that pressure and just results in a harsh ride.

which is more restrictive the cat or the muffler (stock)? I'm think of starting there along with plugs and wires, already changed all fluids

well if your friend in the 4runner is driving mostly highway and you are driving in the city and on hills he will get better mpg thats the way it goes unless you drive a hybrid

Removing/hollowing the cat will help a bit, not a whole lot, but it is one of the bigger things affecting milage/performance. If you want to get rid of it's limited flow abilities but still want to pass emissions and at least have the appearance of legality (cops don't like it when you don't have a cat) find one in a junk yard and hollow it, keep your original for swapping in when you need to pass emissions. Most mufflers are nowhere near as restrictive as a cat can be so unless you want to delve further into illegality by using a dummy muffler that your exhaust bypasses, just go with something that has a high flow rate, effectively the same thing.

wont it throw codes??