ShortyyG33 aka SLiCKK's MK codes - NTSC-USA

RMCE01
Mario Kart Wii (US)

Bullet Bill Speed - Fucking Fast (+/ D-Up)
* 28341462 00000018
* 048B1138 43960000
* E0000000 00000000

Bullet Bill Speed - Normal (+/ D-Left)
* 28341462 00000011
* 048B1138 43110000
* E0000000 00000000

Bullet Bill Speed - Slow (+/ D-Down)
* 28341462 00000014
* 048B1138 40000000
* E0000000 00000000

Bullet Bill Speed - Backwards?! (+/ D-Right)
* 28341462 00000012
* 048B1138 C3110000
* E0000000 00000000

Bullet Bill Speed - Faster Than Fucking Fast (2)
* 28341462 00000100
* 048B1138 442F0000
* E0000000 00000000

Ultimate Items
* D27E4DDC 00000002
* 3FE08000 93BF1500
* 3BE00000 00000000
* 28341462 FFF70008
* 8000000F 0000000F
* 8000000E 00000001
* E0000000 00000000
* 28341462 FFFB0004
* 8000000F 00000009
* 8000000E 00000001
* E0000000 00000000
* 28341462 FFFE0001
* 8000000F 00000007
* 8000000E 00000001
* E0000000 00000000
* 28341462 FFFD0002
* 8000000F 00000006
* 8000000E 00000001
* E0000000 00000000
* 28341462 FBF70408
* 8000000F 00000008
* 8000000E 00000001
* E0000000 00000000
* 28341462 FBFB0404
* 8000000F 00000003
* 8000000E 00000001
* E0000000 00000000
* 28341462 FBFE0401
* 8000000F 00000002
* 8000000E 00000001
* E0000000 00000000
* 28341462 FBFD0402
* 8000000F 00000000
* 8000000E 00000001
* E0000000 00000000
* 28341462 BFF74008
* 8000000F 00000001
* 8000000E 00000001
* E0000000 00000000
* 28341462 EFFF1000
* 8000000F 00000004
* 8000000E 00000001
* E0000000 00000000
* 28341462 FFEF0010
* 8000000F 0000000D
* 8000000E 00000001
* E0000000 00000000
* 28341462 7FFF8000
* 8000000F 0000000B
* 8000000E 00000001
* E2000001 00000000
* 48000000 809BEE20
* DE000000 80008180
* 58010000 00000014
* DE000000 80008180
* 48100000 80001500
* DE000000 80008180
* 9421000F 0000008C
* 9421000E 00000090
* E0000000 80008000
] D-Pad (4 buttons): UP= Bullet Bill, DOWN= Star, LEFT= Blue 
Shell, RIGHT= Bob-omb 
] B + D-Pad (4 buttons): UP= Lightning, DOWN= Fake Item Box, 
LEFT= Banana, RIGHT= Green Shell 
] C + D-Pad UP: Red Shell 
] Minus Button: Blooper 
] Plus Button: POW 
] Home Button: Mega-Mushroom

Instant MT A/+
* 28341462 00000810
* 048B1400 00000000
* 048B1404 00000000
* 048B1408 00010000
* 048B1278 00010000
* 66000006 00000000
* E0000000 00000000
* 28341462 00001800
* 048B1400 0002010E
* 048B1404 0002012C
* 048B1408 00030000
* 048B1278 004B0000
* E0000000 80008000

Extended bomb timer
* 0279CBEA 00000FFF
* 0279BABE 00000FFF

VR 1/9999/35555 (C+ - =1)(Home=9999)(C+ +=35555)
* 28341462 00004010
* 48000000 809B8F88
* DE000000 90009380
* 5A010000 00009050
* 12000000 00008AE3
* E0000000 00000000
* 48000000 80000000
* 28341462 00008000
* 48000000 809B8F88
* DE000000 90009380
* 5A010000 00009050
* 12000000 0000270F
* E0000000 00000000
* 48000000 80000000
* 28341462 00005000
* 48000000 809B8F88
* DE000000 90009380
* 5A010000 00009050
* 12000000 00000000
* CC000000 00000000
* E0000000 80008000

BR 1/9999/35555 (Z+ - =1)(Home=9999)(Z+ +=35555)
* 28341462 00002010
* 48000000 809B8F88
* DE000000 90009380
* 5A010000 00009050
* 12000008 00008AE3
* E0000000 00000000
* 48000000 80000000
* 28341462 00008000
* 48000000 809B8F88
* DE000000 90009380
* 5A010000 00009050
* 12000008 0000270F
* E0000000 00000000
* 48000000 80000000
* 28341462 00007000
* 48000000 809B8F88
* DE000000 90009380
* 5A010000 00009050
* 12000008 00000000
* CC000000 00000000
* E0000000 80008000

Green/Red Shell Speed Modifier(C+Up=300Km)(C+Down=145km)
* 28341462 00004004
* 048A12E8 43110000
* E0000000 00000000
* 28341462 00004008
* 048A0FD8 43960000
* E0000000 80008000