Pro cal versus track key.
I believe the track key can only be installed on 2013/14 my vehiclespro cal can be installed by owner but needs to be installed by authorized ford dealer to have warranty maintained by ford racing.i have a 2013 auto and have had the pro cal installed. It cost me 90 bucks.
It's ok but there are better tunes out there but ford racing won't pick 3/36 k on them.
Track key has some features in that the tune is activitated by the key so if you don't want to use it you can use the normal key and it is then stock pcm settings.