I roll into suckville late on a Friday nite an set up my camper. Not sure how long I'm goin to be here but could be a permanent resident.

05 with stock motor an stock gears turning 37x13.5x18 AT. Have nO lie-o-meter an cant figure MPG y hand because when speedo reads 65 I'm running 72.
But I know my MPG suck.

Soon to put in 4.56 gears in her an hopes MPG goes up.

 

blain next time your in town let me know I can make things happen to keep your truck running while you wait.
so far what it seems is ford has caped the ficm programing to reduce the effects of pcm tuning. Mine runs great, as it should now. and if you would like you can drive mine before you send yours off to ed

 

They don't play fair, do they?

 

Well, just did 691.1 miles. Used 49.37 gallons 13.9983796 MPG. Not great.

I still have some hope for higher mileage. Those miles were at 70-75 MPH.(Most were at 75) 3 Major passes had to climb over Snoqualmie, Lookout and Fourth of July.

Running light. Probably truck weight of 8600 Lbs. I run 35's, level kit.

Not sure if re-learn will do anything. My truck sat for 4 days batteries unhooked. New turbo, and of course the FICM tune Atlas 40.

So far, that's my story.

Not sure which hurts more, 13.99 or paying 4.54 per gallon on 22.08 gallons.

 

I visit sucksville sometimes... but I have gotten some good MPGS ill have to take a pic of my log book I keep on the truck.

 

Those passes aren't minor hills. If you did them at 75, then you'll probably see better mileage once you get some time on the flats.

You don't mention if you have any programming in the PCM to account for the PowerMax... The rumor mill says that you have to have some programming tweaks to make it work right.

I'll trade you, $3.95 for 160 gallons.

-blaine

 

Quick reminder for everyone here, about mileage.

Remember that these trucks are aerodynamic bricks.

I don't think that any one of us tips the scales at less than 8000 lbs, and I think everyone here has 4x4...

They're not going to be mileage champions without some SUBSTANTIAL mods...

-blaine

 

I have an early '06 (build date of 11/05) with stock tires and no tunes and I get 17.5 - 18.0 mpg on average. I am curious if I could push the 20 mpg mark with the Atlas 40.

 

GreenPSD, the feedback from ed@ficmrepair.com is 1-2 mpg increase

 

Of course it would help if I get the truck recalibrated for the larger tires that came with the truck.

Last leg of the trip, was watching the mile markers and found that it is nearly a tenth of a mile off.

60 miles, I lose 4.3 miles. Should be 64.3 miles drove.

So, if I figure those uncounted miles into my post, I hit 15 MPG. Doing 75 MPH.

A little better.

I haven't noticed much difference in the new turbo. But, it does have the Atlas 40 behind it.

 

You could use your gps for accurate mpg. My truck was 1% high with stock tires, using a gps as reference.

 

the one good thing about the banks IQ is that it has what i call the
barf-o-meter screen. you enter what you paid for gas, and it does
a running total of the money spent of fuel since you turned on the
key this morning, and it's accurate to 2%. fill the tank to one click
in the morning, drive it around and after a tank, fill it at the same
pump, and the amount you spend versus what it says you spent
is within a buck or two on $75 worth of fuel.

so, with 10k rolling weight, on level ground, no wind, going
to san diego on I-5 thru camp pendelton, going south, i got
19.6 mpg. coming north an hour later, no wind, i got 17.2 mpg.
cruise control on 65.

did a repeat two days later, playing with the power settings,
and found that economy #2 setting gets lower mpg than
#6 setting (+100hp/+150fp)

overall milage for the van since rebuild is 13.6 mpg, considering
it's almost all stop and go, and the weight, that seems like a gift.

20 mpg? no way in hell. there is no such thing as a free lunch.

 

Just went on a 130 mile excursion to a winery & 18.15 mpg hand calculated, unloaded, all freeway driving 60-70 mph. The combo tunes seem to work well with freeway driving!

 

While the PHP tunes help mileage out quite a bit (0.5-3 mpg is what I've been told from various of my customers, it seems, with an average of about 2), the thing to remember in any vehicle is that speed kills fuel economy. Drop from 75mph down to 70 and you'll see a difference. Drop from 70 down to the 'are we there yet' speed of 55mph and it will be HUGE.

Quite a lot of the mileage gain variance has to do with what tune the customer had on their truck to begin with. Those with the latest tune seem to see the largest gains, those with the earliest tunes see the least, but those are the same guys that have to plug their trucks in during the winter due to zero heat induction in the flash.

 

I have seen .3-.5 gain in my truck. But I know why....
Im the guy in the fast lane running 75+ at 5am on the way to work