Ok here it is....Truck will not go over 4000 RPM, Once I get there it has no power at all, like it isn't getting something or getting to much of something.
I believe this started within a week after changing spark plugs, maybe sooner. But either way it is getting worse. I looked under the hood to make sure everything I touched was tight and there. It is. As far as I can tell the hoses that you need to remove to get to the spark plugs ( Stupid Placement for spark plugs) are in fine shape, as well are the electrical plugs for sensor I imagine,
I am getting no codes as of yet.

Any help is appreciated and lets hope that I am able to fix it myself.