Swap the 14 and 13 ecu and your ready to roll. For the 12 to the 14 you will also need the exhaust bracket to maount the downpipe. I am pretty sure if you are swapping you can use the 14 can on the 12 and take the bracket off and use it on the 14.
A 12 ECU will not work on the 13-14 but Snosfun already has a 14 ECU with his BD upated Silber kit.