2013 PP sho just had rear pads replaced. Motorcraft BRF-1383 DG1Z-2200-b brake kit
pads say PFC-42EF B16 DG13-2219 BC INR APNIK P33SA
I googled the PFC-42EF, it is a PFC brake pad, carbon metallic, semi race, 42EF is the pad compound.
Bedding New Performance Friction Brake Pads
Motorsport
If the discs were previously being used with Performance Friction pads, then the bedding procedure will be achieved quickly with new PFC pads. If the discs were previously bedded using a different manufacturer's pads then the process will take slightly longer. Again, with brake cooling ducts open and fully functional, perform the following procedures.
On the first lap, perform several snubs with progressively higher pedal pressure and braking force and from higher speeds. You will feel the effectiveness of the brakes increase with each successive brake application. This should take 6 to 10 snubs per lap and is usually completed in one or two laps. If non-PFC friction materials were previously run on the discs then this procedure could take as many as three to five laps. This is because the non-PFC friction material transfer layer must first be cleaned from the disc and then a fresh layer must be imparted to the disc.
Running additional laps is the best way to accomplish the new transfer layer and, due to the higher surface temperatures, will assure a complete removal of the old friction materials from the disc. Braking effectiveness should be excellent at this point and the car can be driven normally.
NOTE: Sanding/machine grinding the discs will not decrease the bedding time. Whenever new Performance Friction pads are installed, the pads require very little cool down time. Usually the time spent taking tyre temperatures and a debriefing with the driver is sufficient.