I have a 2004 5.4 f150 and i seam way underpowered. When i got it it wasn't like this. I have never had any lights come on, i have ran some injector cleaner through it, I put i new fuel filter in, and my air filter is clean. It has 61,000 miles on it. Anyone have any comments.

 

Welcome to FTE, great to have you on board.
Drop into the 2004 - 2007 F150 forum https://www.ford-trucks.com/forums/forum24/
Be sure to cvisit your local Utah Chapter https://www.ford-trucks.com/forums/forum144/