Unpatched, found by myself.

Guns never need reloading:
Code:
0009A6C4 - RAM
0008AFC4 - SELF
 3929FFFF - addi r9,r9,-0x1  -> 60000000 - NOP

OGP - 2F8B00003929FFFF913F0318
COP - 2F8B000060000000913F0318
Max Money on pickup:
Code:
00322FE8 - RAM
003138E0 - SELF
 D19f0100 - stfs f12,0x100(r31)  -> D17F0100 - stfs f11,0x100(r31)

OGP - D19F0100419E0024E80100A0FC206090
COP - D17F0100419E0024E80100A0FC206090

Left+X = Health regenerates to full nearly instantly
Right+X = Turn off health regeneration
(Can still die if health bar is emptied instantly)

Down+X = Freeze all NPCs
Up+X = Unfreeze all NPCs
(Doesn't affect vehicles)
Code:
Jump to custom section:
00374E58 - RAM
00365758 - SELF
 60000000 - NOP -> 488c168d - bl 0x00c364e4
OGP - 7C7F1B784BE961A560000000
COP - 7C7F1B784BE961A5488c168d



00C364E4 - RAM
00C26DE4 - SELF

3FA000F0 - lis %r29,0x00f0
63BD5C61 - ori %r29,%r29,0x5c61
8BBD0000 - lbz %r29,0(%r29)
2E1D0021 - cmpwi cr4,%r29,0x21
2E9D0022 - cmpwi cr5,%r29,0x22
2F1D0024 - cmpwi cr6,%r29,0x24
2F9D0028 - cmpwi cr7,%r29,0x28
3FA000D8 - lis %r29,0xd8
63BDCFB0 - ori %r29,%r29,53168
4192000C - beq cr4,0xc
41960014 - beq cr5,0x14
4800001C - b 0x1c
3BC00001 - li %r30,0x1
9BDD0000 - stb %r30,0(%r29)
4E800020 - blr
3BC00000 - li %r30,0
9BDD0000 - stb %r30,0(%r29)
4E800020 - blr
3FA000E5 - lis %r29,0xe5
63BD4758 - ori %r29,%r29,0x4758
419A0018 - beq cr6,0x18
419E0020 - beq cr7,0x20
8BDD0000 - lbz %r30,0(%r29)
2F1E0001 - cmpwi cr6,%r30,0x1
419A0020 - beq cr6,0x20
4E800020 - blr
3BC00001 - li %r30,0x1
9BDD0000 - stb %r30,0(%r29)
4E800020 - blr
3BC00000 - li %r30,0
9BDD0000 - stb %r30,0(%r29)
4E800020 - blr
3FA0308E - lis %r29,0x308e
63BD85C4 - ori %r29,%r29,0x85c4
83BD0000 - lwz %r29,0(%r29)
C01D0014 - lfs f1,0x14(%r29)
D01D0010 - stfs f1,0x10(%r29)
4E800020 - blr

OGP:
00080008008000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

COP:
00080008008000003FA000F063BD5C618BBD00002E1D00212E9D00222F1D00242F9D00283FA000D863BDCFB04192000C419600144800001C3BC000019BDD00004E8000203BC000009BDD00004E8000203FA000E563BD4758419A0018419E00208BDD00002F1E0001419A00204E8000203BC000019BDD00004E8000203BC000009BDD00004E8000203FA0308E63BD85C483BD0000C01D0014D01D00104E800020