Hello Anybody out there know of any Products that are PROVEN to Increase Miles Per Gallon without Suffering more than 10% Power Loss, And Will not Cause Damage to the Computer, Or ECM? Let me know Please, as I have just Purchased a New F-150 with a 5.4 and Compared to my 2001, It's getting 6-10 MPGs Worse than the 2001. Thanks. K.R. Paul

 

Copied from FORD's web site for the 2006 King Ranch 4X4 -
Fuel Tank Capacity: 30 gal.
EPA Mileage Estimates: 14 mpg / 18 mpg
Range in Miles: 420 mi. / 540 mi.

My 2001 has been averaging 17.75 mpg for the past 12 tanks (average 25 gallons per fillup); so if you're experiencing a 6 to 10 mpg dropped from my average, you're only getting 8 to 12 mpg - 60% of the EPA estimates. Recommend taking your KR back to the dealership /as your mileage is not meeting the EPA estimates and that's just not right nor acceptable for your purchase.

Hope you get things kosher; it's a great truck but you should be getting much closer to the miles per gallon that is advertised - period.

 

10mpg is pretty significant.... scary different frankly.

I managed to get in the best case neighborhood of around 20 in my old 2001 but, one big difference, it was 2wd.

My 05', with some standard 'bolt-on' modifications including tuner, Magnaflow SISO exhaust, and Air Force One intake kit, gets around 17 with mainly heavy-footed highway driving.

If I'd get out of the pedal, I suspect I could hold it a little bit higher than that -- maybe around 19.

 

My 01 averaged 15-15.5 around town driving and 17-18 on the road at 80 mph. Here in flat Florida. It was a 4.6. 2WD. Single in, dual outlet cat back.

My 05 averages 14.5-15 around town and 17-17.5 on highway at 80 mph. Just went down to the Barrett-Jackson auction last Friday. It is a 5.4 and 2WD. Truck has 25,000 on it. Amsoil, Magnaflow SI/DO cat back.

As RP made reference too, get out of the loud pedal and your mileage will increase. Most, now not all most, poor fuel mileage is driver induced. This comes from my 25 years as a Parts and Service Director at Ford/Lincoln/Mercury. I made "MANY" fuel mileage tests throughout the years, and except for the old 460 Lincolns my mileage was Mucho better then the owners. Since the owner would go with me on the run to prove out the numbers.....I always got the same answer from them, "That's all well and good, but I don't drive like that".

 

Hello. I forgot that my 2001 was a 2wd, and the 2005 is a 4wd, But still the best I get on the Highway with the Cruise on, 65-70mph is 16mpg, guess it falls within specs. I must have had a good motor in the 2001, at 65-70mph with cruise I would get around 22mpg. I did notice that Towing the Same Trailer with the Different Trucks is a big difference also. At 65mph with the 2001 I would avg16-17mpg, with the 2005 at 65mph I get 10.4mpg, if I drop to 61, I get 13.2. Thanks.

 

I bet you already have one at your house.

I guarantee 100% that it will improve your fuel mileage.

Ready?



























Go to your refrigerator and get a raw egg, and place it under your gas pedal.

That's it.

I guarantee 100% that you will achieve an increase in fuel mileage using this device.

 

LOL! This is some good advice... it's tough to stay out of the pedal with that much oompah beneath it.

 

You probably don't have many miles on it yet either. I bet you will see some improvement after about 6000 miles. Mile continued to improve till about 10,000. I have maintained reords in Excel of every fillup since about 2000 miles and now have over 22,300. Also, I used to think gas was gas but I keep a record of where I bought and how I drove on each tank. I have found that I get the best with Conoco, then Shell, then Exxon. Surprised me that it made a difference. This last tank, I had at least one WOT and got 17.15325 running around the Metroplex. I do not baby it at all. Just let it break in and buy good gas and see what happens.

 

Great question. My '06 KR has 6,800 miles. It is getting 13.4 MPG. It does not seem to matter whether the gas is 87 or 93 octane. I have a fast car so I do not ask this truck to provide any kind of "thrill." In fact, I have tried various approaches to acceleration, from slowly increasing speed to quicker firmer pedal stuff. Truth is, it just does not seem to matter what I do, the truck just sucks gas. I read all these forums, trying to find the magic solution to this. I go try anything that sounds like a sincere, intelligent recommendation, but to date, nothing has had any meaningful impact. Hopefully, there is some combination of bolt on technology and ideal driving technique which will prove to solve this. Please let me know when you find it! Thanks for your question. Sorry to let you down, but I have no answer for you.

 

OK, so I am curious. Mind sharing more info about this car? (I am car guy too, but this is an automobile forum, so I guesss most of us are).

 

Check your tire pressure, mine came from the dealer around 30 psi. Pushing them up to 40 psi gave a several mpg increase, I also have the LT tires so the pressure is not excessive. I also had the truck re flashed and that also gave me a nice boost. Other than that I must say the biggest thing that you can do is to exert as little pressure in the downward direction as possible on the skinny pedal. On a trip from Little Rock to Dallas the message center indicated 20.2mpg. This was on a bone stock 4x4. Prior to that the best that I had ever seen was about 16mpg, normally closer to 14. The only difference was my speed. Before I would drive 80+ on this trip I was in a group doing 65-70. Keeping the engine below 2000-2500rpms and speed below 75 does wonders. Now I average close to 17 with only the occasional WOT romp. Surprisingly the drive to work does not take any longer at 70 than it does at 85.

Joe

 

Love to talk about it, but I'll keep it brief. The car is a 2000 Porsche 911/996 Carerra Cabriolet. Water cooled, FabSpeed exhaust system, airbox modifications custom done. Turns a DYNO AT 318 HP to the wheels
If I knew how to do it, I'd post you a photo. (sitting next to the KR of course!)
Makes short work of tires, runs like a deer through autocross courses, and is one bad ..... down at Watkins Glen.
Like your Mustang too. Bet you have filled that interior with smoke a few times! Those BF G's probably don't last you too long either.

 

Hey Wookie, What do you mean: I also have the LT tires so the pressure is not excessive. I also had the truck re flashed . What Tires are the LT Tires, and what is it to have the Truck "Re Flashed"? Thanks.
I also spoke to a Guy here in AZ{I am on Vacation} that put the K&N Series 63 Kit on His 2005 SuperCrew 5.4. He has seen 75 to 100 Miles more on Each Tank coming out here from Out East last Fall. ALso Heard about the Voliant Kit Being "Good", But don't know anything about it.
Thanks so far for all the Input.
I think I may Try the 57 or 63 Series with a Little Mods to Suck more outside Air in in the Next Week before I head back to Michigan.
I will keep things Posted on Progress and Improvements.
Paul

 

I mean that the optional Goodyear Wrangler AT/S LT tires are rated at something like 60 psi at max load. Many P-metric tires have a max pressure of 35 psi. The "reflash" is when the dealer updates the ECM to the latest software version. Some of the earlier software revisions had performance and drivability issues. Mine had a bit of a throttle lag so I had the dealership look at it, the cure was a reflash.

Joe

 

If you don't have a tonneau cover already, I would suggest getting one. It won't help your city mpg's much, but on the highway it added about 1 to 1.5 mpg. I get 13-14 around town and 18 to a best of 21.6 mpg's highway with my Lariat. Mpg's also improved as I added up the miles on the odometer. I have about 11k on it now.