I have noticed in the past weeks that my 2008 F250 squeals when I accelerate and the RPM is usually between 2000-2500 RPM's. If I let off or "floor" it, the squeal goes away. It is very loud, not like a belt or air whistle. I don't really notice a power performance differerance. I was thinking it could be turbo related and maybe it has more to do with the psi of the tirbo and less with the RPM's.

ANY IDEAS???? Anyone else have something similar? Warranty just expired 03/22/10.