I'm having the same issues you are experiencing. I have had my car for 2 weeks and has 180 miles on it. I have not speed shifted it yet and I don't see how that would help either. I guess I should take mine in at some point but I will probably wait and see how/if others are getting this...
Great story! Exciting to see this stuff on a brand new car and to have Travis and Boost Works less than 2 miles from the house is great for me. Time for me to start saving my monies!
Ford is going to offer an x-pipe that replaces the resonator. It will be a cut and clamp in to place install. I'm also considering doing this and adding an axle back. Part # is M-5251-M8.