Since Diddy Kong Racing was never officially released on the Wii Shop Channel, developers take an official N64 Virtual Console WAD (like Mario Kart 64 or The Legend of Zelda: Ocarina of Time ) and replace the internal game ROM with the Diddy Kong Racing ROM.
If you click the channel and your Wii instantly goes to a black screen or freezes, this is usually caused by an or a bad injection. diddy kong racing wad wii work
Select (or your chosen WAD manager) and load it. Navigate to the WAD Manager option inside the app. Select Wii SD Slot as your source device. Since Diddy Kong Racing was never officially released