I just got my F150 with the 5.4 this Tuesday and I was kinda wondering how I can increase the gas milage. Will getting a new fuel filter and new spark plugs make a difference?

 

perform all routine maintenance to get truck in good running condition.
Get rid of as much weight as you can. Junk in the bed etc.
Drive slow and steady not like you stole it.
keep tires aired up to the correct pressure.

Welcome to the site. stop down in the General Discussion forum and say hello.

 

also...k&n fipk generation 2, performance exhaust....and dont let anyone tell you that they dont help...because for me they do....is just all how you drive it....and they probably drive it faster because theres more power so they think its actuall worse on gas....goodluck and congrats

 

if you are driving alot of highway, keep it clean and waxed this will achually get you better MPG

 

drive with the tailgate up....
get a bed cover / cap
thats my .02