Could be a lot of things, can't tell much from the video. My guess is a heat shield rattling or something like that
. Let us know what it ends up being.
Little Red. 2011 V6. Automatic Trans., C&L CAI, JLT Catch Can, BBK Ceramic Coated Long Tube Headers with BBK Catted X Pipe, Axle Exchange (American Muscle) Aluminum DriveShaft, GT 500 Lower Control Arms, Koni (orange) Dampers, Steeda Watts Link, Ford Racing 3.73 Gears, Magnaflow Street Series Axle Backs and a few more mods....Wifes car, 2014 Ford Edge Limited.