Just got back from a short 300 mile or so round trip and with 6700 on the odo This KR w/3.73's towing a small trailer with a 4 wheeler on it(600lbs) and it was only getting in the high 11's for MPG's and seems real sluggish passing and takes awhile to get going. I know its got the electronic throttle and all but jeez. Am I the only one that thinks it should be better than this? Other than that I love the truck,just with this bad milage you would think that it would haul the mail.......but.

 

Superchips Tuner.....all you need to know. Are you sure you dont have anything else going on? Thats awfully low mileage for only hauling 600 pounds.

 

A tuner will make all the difference in the world but as of right now, the only tuner available for the 05 is the hypertech.

 

Everything checked out at the dealer when I took it in for the 1st oil change,its had the "update" done on the PCM so I guess it just needs to get some more miles on it,hopefully it will get better. Is there anything I can do to it without spending much $ on it.

 

I just got done pulling an enclosed trailer with my '64 Catalina in it. I pulled it about 600 miles round trip. I averaged 14.98 miles/gallon.
I am not complaining...

MK

 

Adding a Borla exhaust system woke my 04 up quite a bit. It felt like a dog compared to my 01 that had 3.55 gears.

 

So what is involved with a Supertuner Chip. What does it do? Does it affect the warrentee? Is this something the average guy can do? Please educate.

 

It is a very simple add on. If you have thumbs, and can sit still for 5 minutes, you can use the Superchips tuner. It plugs into the OBDII port (right below the steering wheel, under dash). Just follow the instructions on the lcd screen (its a handheld unit), and away you go. Everything is laid out in very understandable wording. It also doubles as a code scanner. Thats a very cool feature.
What it does:
The first time you plug it in, it will save the stock computer program (Fords calibration). From there, it will load a new computer program, based on whichever setting you choose. There is an 87 octane, a Tow performance, and a High Performance. I personally use the High Performance. It does require 91+, but I do get 1mpg better with this particular tune over stock. Once the tune is loaded, away you go! The power difference is instant, and definately noticeable. The transmission shifts quicker, giving it a much sportier feel. It is in no way jarring, but firm. It does not affect any warranties. You can check out some information about it in the FTE store ( www.motorhaven.com). Not only does this store help keep FTE going, but they also have the best pricing on these things ANYWHERE on the net. I searched for a good three weeks before I finally gave up finding a cheaper place (Was always going to buy from there, but I just wanted to see if anyone could match them....and they couldnt). Anything else?

 

No disrespect, but I find that very hard to believe.

 

I'll swear on a stack of bibles.

I average 17-18.5 mixed highway and back roads. I don't punch the gas, I use 87 octane. I calculate gas milage at every fill up. I rotate my tires, and make sure they are properly inflated, I don't haul around alot of useless junk. The gas stations around here are no longer using the "winter blend" (10% ethanol).

Sorry if you think I'm a liar....
but my calculator (and wallet) doesn't lie..

MK

 

I tow over 7,000lbs and am not seeing any sluggishness when towing.

 

mkoser you have one of the highest mpg's I have heard of yet,your trucks doin good,I would be happy if I could get 16 mpg hwy.

 

I have a 04 lariat screw with the 5.4 373 LS and i average about 16-17 in the city and about 18-19 highway thats driving like i got some sense and not acting crazy the only mods have ben K&N replacement filter , airraid modular intake tube and SI/DO 40 series flowmaster with 3 1/2 tips , i've had the pcm updated and these simple mods have really seemed to help my truck it sounds good looks good and drives better all for around 400 bucks not bad for mods that work . exhaust was 284 filter was 40 and intake tube was 92 waiting for the cash to get a tuner probably gonna go with hypertech but right now i think the biggest bang was the intake tube it really seems to haven woken this truck up

 

i have an 05 supercrew 5.4 with 1900 miles on it and am seeing 14.3 to 15 in town and the high on the road is 16.7 with no load i am hoping it gets better as miles are put on it as my 01 4.6 supercrew does MUCH better. by the way those figures are off the computer but pencil and paper calcs seem right on.
jim

 

This mpg thing keeps going from post to post never to die. 04 Screw 5.4 3:73 gears, City and Hwy average 15.9/15.8, Hwy driving 70 mph 19.9, 65 mph 20.8, sometimes 21. Never checked pullonmg the 7,000lbs of tow.