14.5 MPG's!!!

[Escondido]

Just completed the break in trip for the '07 after putting 93K on my '03. Took a road trip to Crested Butte and used the miles to do some testing on the gas mileage. Surprisingly, we actually found the sweet spot in the winding roads betwees Santa Fe and Gunnison. During that stretch we averaged 65 MPH's and was consistently under 2K rpm's. Our mileage was 14.5 mpgs. Thought we had written something down incorrectly but reconfirmed it on the return trip.

Now that we have found the sweet spot I will have to retrain my foot if I want better mileage.

I can hardly wait to tell some of these people that I got 14 mpgs and watch them stammer. Of course I wont be able to keep up the average but we did seem to do a little better than my '03.

[KONG]

I agree with you, the h2 does have a sweet spot. I get 16-17 mpg but I dont bother telling anyone either because no one beleives. I just got back from a trip to New Mexico myself. The trick is like you said, Keep it under 2000 rpm. a Power Programmer helps too.. with this I do about 75-80 mph

[working Hummer]

16-17, ya right.

[KONG]

see what I mean. nobody believes.

[BlueHUMMERH2]

I directly calculate the MPG using a full tank, reset the trip meter, and then fill the tank again (preferably at the same station and pump) and then use the gallons that go in to figure the MPG.

I find that the trip computer lies. Best I've ever gotten in the winter was just pushing 15 MPG on level interstate going 60MPH. I'm going to take a closer look this summer at the warm MPG. But if you're going downhill, with a tailwind, you'll probably get upwards of 17MPG. A programmer would definately help!

[HUM GOOD]

My problem is I CAN'T DRIVE 55 !!!

[kom]

It works! I just did a quick trip to Pasadena and back (about 55 miles) and I ended up averaging 15.1 mpg by keeping it at 65 mph (2k rpm).

[KONG]

I told you, Now try it with a power programmer, then you would be able to go 75 mph at 2500rpm. and you will average 16-17 mph. I tell you guys no lie....

[zmanH2]

I was doing 15.5 mpg (full tank reset) yesterday until we hit traffic. This is the highest I have seen on my rig. Now the computer is at 12.7 mpg after half a tank.

[Hummer Aficionado_VT]

I would never of thought it possible...

[Motohead]

Originally Posted by KONG

I told you, Now try it with a power programmer, then you would be able to go 75 mph at 2500rpm. and you will average 16-17 mph. I tell you guys no lie....

I think at "16-17 mph" you might get that kind of mileage...

[KONG]

oh sorry its 16-17 mpg

go granny go...

I can't drive 55, 60, or 65 around here very often.

[finbox]

That trip computer lies like a SOB, if you are stating your #'s from it, it's not worth posting.

[MarineHawk]

Originally Posted by PhilD

I know most of the handhelds just change shift points and pressure transmission wise. They may increase fuel efficiency in other ways, but they won't change the rpm you are pulling for a set speed.

Yes, they are magic. They will also make your tires bigger and your lift higher.

[Vettster]

Driving downhill that is.
When I turn around and have to go uphill, I get 6.


It averages out to 12.


Drive Safe,
Vettster

[Escondido]

Numbers I quoted were based on fuel used and actual mileage. No tricks from the computer, I never believed the readings on my '03. I too can't drive 55. I was just suprised by the results on a portion of my trip. I had never dissected the different impacts before but the road trip provided a great opportunity. If I could figure out how to keep it below 2k rpms while keeping up with the traffic that sure would be nice. Unfortunately 80 is just keeping up on I-10.

[johndjmix1]

I too found that keeping it at 60 on the highway will get you 13-15 mpg.....but its dam annoying to go that slow...and...

Figure out how much you save on gas by those 2-3 mpgs. A few bucks....not even worth it. Ill pay the extra $5 at the pump to be able to drive normal.

--John