Supastarrio | Mario Kart Wii Codes: Instant Respawn @Supastarrio | Uploaded 11 years ago | Updated 11 hours ago
This code will make you instantly respawn when you fall off a course, drive out of bounds, or when lose all your balloons in balloon battle.

Instant Respawn [NTSC-U]
028B1154 00000000
048B1304 00000000
028B1308 00000000
0256EFDA 00000000
0256F01E 00000000

Instant Respawn [PAL]
028B5A14 00000000
048B5BC4 00000000
028B5BC8 00000000
02573E2A 00000000
02573E6E 00000000

Instant Respawn [NTSC-J]
028B4B74 00000000
048B4D24 00000000
028B4D28 00000000
025737AA 00000000
025737EE 00000000

Instant Respawn [NTSC-K] *untested*
028A3E8C 00000000
048A403C 00000000
028A4040 00000000
02561E82 00000000
02561EC6 00000000

This removes the blink invincibility in battle mode so you can respawn faster.
If you want to restore it, you can remove the first line of the code or change it's value to 00000096.