I had a similar experience initially with my Dryflow. I actually switched back to OEM paper after a couple days. I then read somewhere that with newer Ford vehicles, after changing the filter, just start the engine, don't rev or touch the throttle. Don't do anything. Just let the car breathe for at least 5 minutes. Apparently there is a calibration process that will try to optimize airflow, and some other factors, based on current conditions. But you need to give the systems a few minutes to do all the math.
I did this after reinstalling the Dryflow, and have not looked back. Might want to give that a try. Maybe it's a myth. But it don't cost nothin'. And it seems to have worked in my case.