Most reputable "scene releases" of the WBFS have the UPDATE folder scrubbed (set to zero bytes). You do want the official Nintendo updater. Instead, you want the game revision updated to v1.01 .
If you already have your WBFS file ready, a simple "vanilla" race is only the beginning. Here is how to perform a modern to your game: 1. The Wiimmfi Patch mario kart wii ntsc wbfs upd
The Jetsetter has the highest raw speed stat but suffers from poor drift and handling, making it difficult for most players to control Most reputable "scene releases" of the WBFS have