@John2568 CBHC will bypass the region check that occurs when you start the title. Whether the title works or not depends on if the title includes the expected language files for your console's region. The loadiine compatibility list points out some of the problem titles.
I didn't know people were still using scene releases. As mentioned, you can get your needed games (with a few exceptions) directly from NUS. Besides Wii U USB Helper, there are also other apps that do the same thing like JNUSTool or FunKiiU. Your choice, OP, which one works best for you. Personnally, I use FunKiiU on linux. You also need to be aware of the existence of a certain site that provides title keys for Wii U, which can not be named or linked to explicitely.
Just for the Portuguese language that the US version doesn't have it included ;T but that shouldn't be a problem for me hehehe just being lazy (and mario kart basically has texts only on the main menu)