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Topic Review (Newest First)
05-04-2013 01:22 PM
Jeep_Pirate I'm getting around 11 to 12 if I'm lucky, 2001 Sport, 3 inch body lift, 33in tires. I would love to get up to the 15-17 range. Anyone running the Bosch injectors, thinking about replacing mine with them.
05-03-2013 10:53 AM
1979WagoneerLTD Lol.

And like my build thread has tracked the average miles per gallon, including some test trailing, metro idiot traffic, and just fun hammer-down driving. It'd probably do a little better on a stock rig without the aggressive driving
05-03-2013 10:24 AM
DarrenT
Quote:
Originally Posted by 1979WagoneerLTD View Post
Diesel.
Dammit
05-03-2013 08:12 AM
horsedad58 2005 TJ, 4.0, Auto, Stock w/10.5x31s. I get between 16 and 17.5 mpg.

Interestingly the lower number is with top up but widows open (side panels and rear panel on or off doesn't seem to matter). Higher mpg is with all buttoned up and running AC. (I'm in Florida and we're already in the 90s).

Proof positive that a solid brick gets better milage than one full of holes!

But what's 1 mpg vs riding in an open jeep???
05-03-2013 07:57 AM
flflash 2003 TJ 4.0, Safari top, 5 spd, 4.5 lift, 1" BL, 4.56 gears, 33's, Cowl CAI, Electric fan, Magnaflow catback, GPS verified speedometer, 107,000 miles on it = 17 mpg combined.

2005 TJ Rubicon Hardtop 4.0, 5 spd, Stone Stock, 31's, 4.11's, 62k on the odometer = 14 mpg combined.

I claculate mileage the old fashion way, fill up write down mileage run it at least to 1/4 tank refill noting miles traveled and gallons to refill do the math equals milage......Everyone wonders why I drive the 03 most of the time.
05-03-2013 06:50 AM
1979WagoneerLTD Diesel.
05-03-2013 06:30 AM
DarrenT
Quote:
Originally Posted by 1979WagoneerLTD View Post
25.
25.....

hell I was pushing it with 24..... You going downhill with the wind behind you?

Mines running a little rough atm. just shoved in new plugs and running totals on 5.7 gals without the thinymajig connected is 103 miles or 165Kms for 18.odd MPG.
I cycled my route to work over the weekend, it's 18km, flat (ish) and 80km all the way in.... so is probably more representative of highway driving than town driving.
but for all the arguments about bloody MPG, I sure as hell didn't buy a Jeep for the mileage nor do I really care what I get, because when I install a lift and 33's whatever I get is going right out the window!!!

Happy Friday y'all!
05-03-2013 05:56 AM
1979WagoneerLTD 25.
05-03-2013 05:51 AM
ChaddG K&n stock box air filter gets you a few xtra miles per gallon too. Mine did.
05-03-2013 04:00 AM
Dep863 I would kill to get even 18 mpg with my 4.0 / 5 speed. I have a 4 inch lift with leveling kit, running 33/12.50/15 and get 15 mpg avg. Thats taking it easy on it! How and the hell are some of you guys exceeding 20 mpg
04-25-2013 07:00 AM
DarrenT
Quote:
Originally Posted by Big Sarge View Post
21.6 does not equal 24 (which was your initial claim) jus sayin.
That is correct, but that's all the scribbles I had access to at that point.

I took off the white lightening thing last night and re-spliced the cables to the coolant temp sensor. After about an hours farting around I got rid of the high voltage warning. Now here's the big question, what difference would it make to advance the timing? because all this seems to have done is advance the timing slightly and alter the fuel flow by around .2l/hr.
I did a google search on it last night and what I've read the seller claims amazing things, and the buyers say it's all BS. It's obviously done something, I just hope it hasn't damaged anything else. Has anyone else ever seen/used one of these?
Can't run her until I get a new windshield fitted tomorrow though I've not driven her for 3 days and I'm getting withdrawals......
04-24-2013 09:31 PM
bmlbrewer
Quote:
Originally Posted by Nick09JK View Post
I have stock everything (want to mod) 09 Sahara manual. 32 inch tires and like 90% around town I am getting 16.1. That's what the computer says at least. Anything I can do to get a few more mpg?
That's everyone's question. When you find out, feel free to share with the group. Us guys in the 14 range would thank you.
04-24-2013 09:31 PM
fattirewilly 9.5 to 13.5
04-24-2013 09:18 PM
Nick09JK I have stock everything (want to mod) 09 Sahara manual. 32 inch tires and like 90% around town I am getting 16.1. That's what the computer says at least. Anything I can do to get a few more mpg?
04-24-2013 06:53 PM
jasongind The last hwy trip I did mainly 60 mph the whole time I got 17.4 mpg's, but I'm still stock gearing (4:10's) and running 35's. In town I get 12.2-12.6 mpg's.
04-24-2013 06:46 PM
flash1034
Quote:
Originally Posted by doclouie View Post
80 mph to Moab a few weeks ago I got 18.6 mpg. Usually I am just under 17 in town or on the highway, but I live in the mountains.
Seriously doubtful. Just sayin.

Flash
04-24-2013 06:07 PM
paul1
Quote:
Originally Posted by jeepgarza View Post

This post was over a year ago, but what is that device and where can i buy one?
Its called a scan gauge and you can buy it from amazon.com or advanced auto parts for a decent price. It plugs right into the obd2 and is very easy to use.
04-24-2013 03:39 PM
jeepgarza
Quote:
Originally Posted by UnlimitedLJ04 View Post
4.88s, 33s, 42RLE. I can get anywhere from 12mpg to 19mpg average, depends entirely how I drive. On the highway, if I can keep it between 55-60mph, drive like an old fart, with no headwind, it'll get a solid 19mpg. Around town is more like 14mpg.

This post was over a year ago, but what is that device and where can i buy one?
04-24-2013 02:13 PM
Big Sarge
Quote:
Originally Posted by DarrenT View Post

Ok, so here's my reckoning out of my folder where I keep my documents.

14.2 gallons @ $3.79 $53 odd. and it was full, brimming full.
493 kms driven.
493 / 1.604 = 307 MILES.
307 / 14.2 = 21.61 miles per gallon.

works out around 9KM per liter.
Due to not being in my jeep, that is all the calculation I have to hand.

Being relatively new, I had no reason to question it.
21.6 does not equal 24 (which was your initial claim) jus sayin.
04-24-2013 02:07 PM
thgr8alex 19 and 24... Jeez. I get between 15 and 16 lol. I have 1998 4.0 5spd with 5 inch lift and 33s so that probably doesnt help...
04-24-2013 02:00 PM
PiePuncher
Quote:
Originally Posted by kshaws21 View Post
Wow you are getting 30%+ better mileage than what your Jeep was capable of coming from the factory and you are using larger tires. That my friend is amazing if true. Since you are running larger than factory tires, did you change the speedo gear? If not, your odometer isn't showing accurate miles therefore throwing off your calculations. If you have the correct speedo gear for your tire size, WOW!!!
Even if Speedo gear wasn't changed, his mileage gone would be lower. If u have a larger tire, u add miles to your total, not subtract and in that case, this dude would b pushing 30 miles a Gallon and I find that impossible . I thought 19 was great, 24 is sick
04-24-2013 12:43 PM
bmlbrewer Soo... I'm the only one I've seen that gets better in the city than on the highway... I guess that isn't as normal as I thought it was.
04-24-2013 10:08 AM
DarrenT
Quote:
Originally Posted by Big Sarge View Post
How many KM's driven on a tank vs. how may gallons to fill back up?
Ok, so here's my reckoning out of my folder where I keep my documents.

14.2 gallons @ $3.79 $53 odd. and it was full, brimming full.
493 kms driven.
493 / 1.604 = 307 MILES.
307 / 14.2 = 21.61 miles per gallon.

works out around 9KM per liter.
Due to not being in my jeep, that is all the calculation I have to hand.

Being relatively new, I had no reason to question it.
04-24-2013 09:58 AM
Big Sarge For a complete fillup with 24 miles per gallon you will need to be getting

360 miles per tank (15gallon tank) which is 600 KM per tank
456 miles per tank (19 gallon tank) which is roughly 755 KM per tank.

And I doubt very seriously that you are running it completley empty, and filling exactly the tank capacity back up. You figures are just hard to believe as noone of us get that kind of mielage, and as stated it was not even from the factory that good.
04-24-2013 09:51 AM
Big Sarge
Quote:
Originally Posted by DarrenT View Post
Nope, miles. Kms is just what's on the clock.
I checked. I checked everything to make sure I didn't cockup somewhere. the numbers don't lie...
How many KM's driven on a tank vs. how may gallons to fill back up?
04-24-2013 09:34 AM
DarrenT
Quote:
Originally Posted by Big Sarge View Post
If he had the stock gear with bigger tires it would make the MPG appear worse. Going off his later post he referenced KM. wonder if he is actually getting 24KPG. That would be more believable.
Nope, miles. Kms is just what's on the clock.
I checked. I checked everything to make sure I didn't cockup somewhere. the numbers don't lie...
04-24-2013 09:30 AM
Big Sarge
Quote:
Originally Posted by kshaws21 View Post
Wow you are getting 30%+ better mileage than what your Jeep was capable of coming from the factory and you are using larger tires. That my friend is amazing if true. Since you are running larger than factory tires, did you change the speedo gear? If not, your odometer isn't showing accurate miles therefore throwing off your calculations. If you have the correct speedo gear for your tire size, WOW!!!

If he had the stock gear with bigger tires it would make the MPG appear worse. Going off his later post he referenced KM. wonder if he is actually getting 24KPG. That would be more believable.
04-24-2013 09:25 AM
DarrenT
Quote:
Originally Posted by kshaws21 View Post
Wow you are getting 30%+ better mileage than what your Jeep was capable of coming from the factory and you are using larger tires. That my friend is amazing if true. Since you are running larger than factory tires, did you change the speedo gear? If not, your odometer isn't showing accurate miles therefore throwing off your calculations. If you have the correct speedo gear for your tire size, WOW!!!
I didn't change anything..... I don't know why or how.
I used google maps to map all the journeys I did, and there's about a 4% discrepancy on the clock. The only thing I see under the hood is a "white lightening" thingamabob.... it's spliced to the coolant temp sensor wires.
I removed it, but it threw up high voltage in coolant circuit errors so I plugged it back in and left it. That was there when I bought it.
The only thing I've done since is change the serviceable parts, plugs, leads, filters, oil, fluids etc.
Don't get me wrong it's not that high 100% of the time, but even my lower calculations seem to be higher than they should be.
TBH, I'm not sure what I think. The clock says 263000kms, but an old bird hollered me in the superstore car park claiming it was her old jeep. She said when she got it there was no motor in it. I mean it looks stock, and drives just the same as the others I've driven... I'm not complaining, but I certainly dont claim to know what or why.
04-24-2013 09:17 AM
Jad4271 97 tj, 3.5 inch lift on 33 inch duratracs. I'm getting only 12.5 to 13 mpg with mixed highway and local with a 6.0, 4L60 conversion. I've heard guys claim to get 20 mpg with this set up but I'm working with one of the top tuners in the country and he can't get me close to that. All of the tuners I talk to say 20 mpg is impossible in a jeep with that motor and I agree. Guys on other forums are getting 20 + mpg with LS motors but they are in camaros and vettes not a brick with wheels.
04-24-2013 09:11 AM
kshaws21
Quote:
Originally Posted by DarrenT View Post
97 2.5l 5sp manual.
Stock suspension, 31x10.5 Cooper discoverer STT.

24MPG, and that's not on the highway, that's up and down side roads to work and back.
Wow you are getting 30%+ better mileage than what your Jeep was capable of coming from the factory and you are using larger tires. That my friend is amazing if true. Since you are running larger than factory tires, did you change the speedo gear? If not, your odometer isn't showing accurate miles therefore throwing off your calculations. If you have the correct speedo gear for your tire size, WOW!!!
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