Both long tube headers and CAI's require an aftermarket tune to function properly. I would grab your hand held tuner and reload the tune that came with the car. If you dont have a tuner your going to need one with those mods and a tune to go with it. If you took the car to a ford dealer and they reflashed a stock tune to the car that will have deleted your old tune, and if you didnt tell them not to chances are they did. So if your car didn't come with a tuner I would start saving for one now.