Hey y'all , so I have a 2006 f150 fx4 with the 5.4. I also have the cold air intake system from k&n, and an edge programmer. But when I put my foot in the gas it has been bogging down. I need a engine guy to tell me how to fix it, I can't take it anymore. I have replaced the fuel filter, the mass air flow sensor, had a tune up done ( only broke 1 plug ) at an early 75000 mi, cleaned my air filter and sea foamed it. I did all this just this summer to try and fix my issue. The people at ford don't have a clue. It seems to run better when I turn my edge to the extreme setting and run premium. Is it possible I am taking in too much air? Any help would be great. Thanks for reading

 

What's your fuel pressure? Exhaust plugged?