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What helps for more performance and gas mileage then

 

It's a 2010 f150 fx4 awesome truck just no low end power off the start

 

generally an intake/tune/exhaust as a combination will help increase power and mileage. if you can keep your foot out of it after you add all that.

I had a 2002 silverado w/ 5.3L. I bought it with a borla cat bat on it. I added a k&N cold air. didnt really see any mileage increase.

added a custom tune, and the thing flew like a bat out of hell and got 17mpg on the highway going 70-75 with 35's!!!! had 3.73 gears. around town driving like an idiot still managed to get 14-15.

Tunes really open up an engine if done right.

 

Hey man thanks for the input I'll check it out