I've driven a F150s since 1989 that my company provided until recently that started giving me a SUV. So I purchased a 2009 STX 4x4 with a 4.6l (got to have a 150). I went to purchase a shell for it and won a set 20" XDs and nitros with a leveling kit. I'm looking for recommendations to gain some throttle response and a few HPs. Any suggestions!

 

a tuner, direct replacement high flow filter , exhaust anything you want really its your truck but the tuner would give you the most that youll feel but with that might as well make it breathe easier