This works only if the save file is not copy-protected. Unfortunately, Budokai Tenkaichi 2 does not allow copying via the official Wii Data Management screen. It is flagged as “Copy Unavailable.”
This is the most reliable method for US, EU, and JP users. dragon ball z budokai tenkaichi 2 wii save data
Here is everything you need to know about using custom save files for Budokai Tenkaichi 2 on the Nintendo Wii. This works only if the save file is not copy-protected