well here it is but i don't know if they will work for you but they did for me though here you go
:After Battle Exp Multiplier Codes
::x2
9223DD32 0000319C
0223DD34 60080040
0223DD38 309C1C28
D0000000 00000000
::x4
9223DD32 0000319C
0223DD34 60080080
0223DD38 309C1C28
D0000000 00000000
::x8
9223DD32 0000319C
0223DD34 600800C0
0223DD38 309C1C28
D0000000 00000000
::x16
9223DD32 0000319C
0223DD34 60080100
0223DD38 309C1C28
D0000000 00000000
::x32
9223DD32 0000319C
0223DD34 60080140
0223DD38 309C1C28
D0000000 00000000
::x64
9223DD32 0000319C
0223DD34 60080180
0223DD38 309C1C28
D0000000 00000000
::x128
9223DD32 0000319C
0223DD34 600801C0
0223DD38 309C1C28
D0000000 00000000
::x256
9223DD32 0000319C
0223DD34 60080200
0223DD38 309C1C28
D0000000 00000000
::x512
9223DD32 0000319C
0223DD34 60080240
0223DD38 309C1C28
D0000000 00000000