I purchased a 2004 FX 4x4, 5.4 3 valve. I didn't buy it for the gas mileage as I tow a large boat, atv and trailer for hunting, etc. I use my truck for what it was built for. I am wondering about a few things, can anyone tell me about the use of one of the programmers, are they worth the money, I live in northern ontario Canada. I get real bad mileage in the cold weather 8 - 9 miles per gallon. The best I have done in the summer is 18 miles per gallon. I run the stock goodyear 18" tires, stock exhaust, but have installed a K & N air filter in the stock air intake box and snorkel. I also have have a cab high cap on the box, and it is an extended cab with the rearswinging rear doors. I drive fairly conservative and don't get my foot into it unless needed to when trailering. Most of my driving is city highway combined with about 80 % highway, truck alone. The thing that bothers me is the highway miles, I have a friend with the the same truck with a tonneau cover and he can get 20 - 23 miles per gallon on the highway, he also has the K & N air filter and stock 17 " tires. I have also contemplated getting a cat back gibson exhaust, and maybe a cold air induction system, are there any real benefits to those? I have had success with Sunoco 94 octane fuel getting 2-3 more miles per gallon, but at a price of course! Thanks for any info yuou can give. Jim Warren

 

Yer going to get the standard "welcome reply" soon...but hello and welcome anyway!

This post will likely be moved by a moderator to the proper forum for your truck. If you go to the forum list https://www.ford-trucks.com/forums/index.php you can find the forum there. You can also try searching the posts in that forum.

Erik

 

I personaly insted of going with a hand held tuner would go with a custom pcm tune. While I wont post a link on the board due to the fact that Motorhaven sells a hand held tuner, if you pm me I will send you the link.

Now the link that I have is not the same tuner that did my Chevy, but one that is just as well respected, and unlike the tuner that I used also handels other brands.