I am going to assume your name is Ben. A lot of us are running a huge Baldwin air filter and a 4" 45 degree piece of exhaust pipe to where your stock air box connects into the flexible hose going into the intake. Total cost of parts between 40.00 - 60.00. There are some professional set ups from vendors that run 200.00 - 300.00. Also some of us have "modified" our exhaust so that they are more free flowing. PM me and I can tell you more about that.
Depending on how hot it gets in your area and if you tow much, ditch your fan and fan clutch assembly. Alot of people say that they got 2 - 3 more mpg by doing that. If needed you can put in electric fans off of a windstar to help with cooling issues. Keep your fuel filter, air filter, and tires properly inflated, (the normal stuff), and go easy on the long verticle pedal to the right.
Those who have a chip can tell you more about that has done for them. I have 313K miles on my daily driver F-350, on road trips I get 20 mpg in the city closer to 15 - 16 mpg. I also run B99, tired of my money going to people who hate us, and more than happy to help farmers and jobs here in America.