ok guys. heres the reason for no acceleration....and from the looks of it, its quite an obvious problem for F150's. The catalytic convertor, right bank, was clogged. And for some of yall out there that did not know this, the cat's are covered under a EPA warranty of 80,000 miles or 8 yrs which ever comes first, regardless of ownership! So when i found this out i visited the local dealership and he confirmed it and is going to replace both cats free of charge. Yee haw!