04 F150 new U7151

[muddyXLT]

Just received my new predator and was wondering if anyone knew of any fuel efficiency tunes. I have 34 inch tires on stock rims and i getting about 10-11 mpg. Please help if anyone knows.

[617F150]

All of the tunes in the predator should give you 1-2 mpg improvement over stock. You may want to check your tire size settings as this will give you a false reading on your mileage. Also having 34" tires will decrease your mpg, assuming that you have stock gears in the truck(3.55 or 3.73). The engine will work harder to get you moving. You may want to consider regearing to 4.56. This will get you back in the proper rpm's and bring your mileage up.

[muddyXLT]

How much would it cost do regear? I've also heard this for the Ford Truck Enthusest page too.

[617F150]

I never priced this myself yet, but I've seen price ranges on other posts from $1200-$1500 for 4WD. Do your homework and shop around. This is one of the best upgrades you can do. This is next on my list.

[muddyXLT]

Thanks. That might take me a while to come up with the money but thanks for the advice.

[froggin]

i have an 04 f150 with 8 inchs of lift ane 37 with 4.88 gears and at 70 mph i am running 1900 rpm same as stock i get 14 mpg call 4 wheel parts and talk to them 4.11 or 4.56 will work good just depends on what you want power or economy or both