Newbie - 6.0 Low on Power
 

Hello, I am new to Power Stokes.
I just bought a 2005 F250 6.0 Crew Cab 4x4 with 267K miles.
The truck seems to run fine, but it is very slow.
It almost feels like the brakes are dragging. (They are not, it coasts/freewheels just fine.)
The turbo boosts to about 20. I see no smoke. Temps and oil pressure look good.
It starts up just fine. It seems to shift fine.
The check engine light is on, but I haven't been able to get the codes yet.
I bought the truck at auction. It was a new car trade in. So I have no history on it.
I am assuming it is stock.
Any ideas?
Fuel filters? Air filter? EGR? Injectors?

Where are you located??

Tulsa, Oklahoma