mine has done the same thing since I have owned. Just a minor annoyance when it is cold. The power on my car is fine though once it is warmed up and I get 24-28 mpg on the highway. Since you moved back from college did you have all your stuff in your car while hauling it back and that is why you got bad milage? I too have new wires, plugs, fuel filter, gaskets, cleaned UIM/LIM, new cat....but not PCV valve....couldn't find the stupid thing. I have a new one, but just haven'changed it. LOL. When I get home from work tonight maybe I will give changing that a whirl. I am also wondering if it is the precats for our cars that might be plugged or something.....or if the secondaries just don't close like they should when it is cold and then they free up after a little bit of driving. But when I did the UIM cleaning they were closed like they should be.
