BD62-672A 90 seconds per battle instead of 99
6D62-672A 80 seconds per battle
5D62-672A 70 seconds per battle
1D62-672A 60 seconds per battle
9D62-672A 50 seconds per battle
0D62-672A 40 seconds per battle
7D62-672A 30 seconds per battle
4D62-672A 20 seconds per battle
FD62-672A 10 seconds per battle
DF80-AD64 Win 1 bout to win the match instead of 2 out of 3--must switch 
off effects before fighting M. Bison
EDBE-0F09 Dizziness wears off very quickly
C9BE-0DA9 Dizziness lasts longer--on harder levels, won't work on computer
BB63-6D2A 99 seconds in 1st bonus round instead of 40
BD63-6D2A 90 seconds in 1st bonus round
6D63-6D2A 80 seconds in 1st bonus round
5D63-6D2A 70 seconds in 1st bonus round
1D63-6D2A 60 seconds in 1st bonus round
9D63-6D2A 50 seconds in 1st bonus round
7D63-6D2A 30 seconds in 1st bonus round
4D63-6D2A 20 seconds in 1st bonus round
FD63-6D2A 10 seconds in 1st bonus round
4DC6-6493 Championship mode on
6DCF-D764 + FFCF-D7A4 Advance to next level when you continue (must 
switch off before you continue on M. Bison stage)

For the next 10 codes, don't choose the character you want to always fight
CBA0-AF64 + EEA0-AFA4 Always fight Ryu
CBA0-AF64 + DDA0-AFA4 Always fight Honda
CBA0-AF64 + DFA0-AFA4 Always fight Blanka
CBA0-AF64 + D4A0-AFA4 Always fight Guile
CBA0-AF64 + D7A0-AFA4 Always fight Ken
CBA0-AF64 + D0A0-AFA4 Always fight Chun-Li
CBA0-AF64 + D9A0-AFA4 Always fight Zangief
CBA0-AF64 + D1A0-AFA4 Always fight Dhalsim
CBA0-AF64 + DBA0-AFA4 Always fight Balrog
CBA0-AF64 + DCA0-AFA4 Always fight Vega
CBA0-AF64 + D6A0-AFA4 Always fight Sagat
B9A0-AF04 Fight M. Bison
DDA4-A404 + 6DA4-A764 Always fight on bonus stage 1
DDA7-AF04 + DDA7-A4A4 Always fight on bonus stage 2

For the next two codes, Zangief's Pile Driver does less damage

3CA4-DD67 + FEA4-DFD7 High throw and grab damage
3CA4-DD67 + EEA4-DFD7 Minimum throw and grab damage
503E-04DF Player dies after getting hit by 2 blows
60AC-AFD4 Both players start with 3/4 energy (1/4 damage)
96AC-AFD4 Both players start with 1/2 energy (1/2 damage)
4AAC-AFD4 Both players start with 1/4 energy (3/4 damage)
C2CC-A7DF Round number does not advance (can't fight to a draw)
DF81-A704 1 draw ends fight in VS. battle
893E-04DF Most punches and kicks do no damage
DDAC-AFD4 Both players start with no energy (1 hit and you're dead)
DDAC-AF64 Player 1 starts with no energy (1 hit and he's dead)
1C65-DF00 Players move faster
D965-DF00 Some special moves are faster
DD61-6DA9 Both players can do special moves in the air
73A5-DF60 Dragon punch does not go as high
2AA5-DF60 Dragon punch goes higher
DD84-DD01 Some special moves are easier to perform (Edmond Honda: 
Sumo Head Butt; Blanka: Rolling Attack; Guile: Flash Kick; Guile: Sonic Boom; 
Chun Li: Whirlwind Kick)
DFA0-DDA0 + ADA0-DFD0 No pause after throwing a Fireball
6D25-A467 + 6F25-A4A7 Players can hit each other no matter where they are
DAB8-A761 Do special moves by just pressing buttons (may make Fireballs lower)

Note: You can customize the next 20 codes to your liking by using 
programming method #3 in the Game Genie codebook.

DDB8-ADF3 Fireballs are lower to the ground
1DB8-ADF3 Fireballs are higher off the ground
DDE3-DF01 Fireballs, Sonic Booms and Yoga Fires
always go to the right (thrown to the left, they go backwards)
EEB8-A793 Light Fireballs, Sonic Booms and Yoga Fires are slower
EBB8-A793 Light Fireballs, Sonic Booms and Yoga Fires are faster
EDB8-A793 Light Fireballs, Sonic Booms and Yoga Fires are super fast
EEB8-A723 Medium Fireballs, Sonic Booms and Yoga Fires are slower
EBB8-A723 Medium Fireballs, Sonic Booms and Yoga Fires are faster
EDB8-A723 Medium Fireballs, Sonic Booms and Yoga Fires are super fast
EEBA-AD93 Hard Fireballs, Sonic Booms and Yoga Fires are slower
EBBA-AD93 Hard Fireballs, Sonic Booms and Yoga Fires are faster
EDBA-AD93 Hard Fireballs, Sonic Booms and Yoga Fires are super fast
DDB1-D4F3 + EEB1-D7B3 Light Sumo Head Butts and Rolling Attacks are slower
DBB1-D4F3 + EBB1-D7B3 Light Sumo Head Butts and Rolling Attacks are faster
F9B1-D4F3 + EDB1-D7B3 Light Sumo Head Butts and Rolling Attacks are super fast
DDB1-D4B3 + EEB5-DDF3 Medium Sumo Head Butts and Rolling Attacks are slower
DCB1-D4B3 + E5B5-DDF3 Medium Sumo Head Butts and Rolling Attacks are faster
F1B1-D4B3 + 33B5-DDF3 Medium Sumo Head Butts and Rolling Attacks are super fast
DDB1-D7F3 + EEB5-DDB3 Hard Sumo Head Butts and Rolling Attacks are slower
D8B1-D7F3 + E9B5-DDB3 Hard Sumo Head Butts and Rolling Attacks are faster
F5B1-D7F3 + 32B5-DDB3 Hard Sumo Head Butts and Rolling Attacks are super fast
6DA4-6707 Most special moves disabled (computer can still do them, Zangief 
can still do Spinning Clothesline)
CB61-07A4 Invisible Fireballs, Sonic Booms, Yoga Fires and Yoga Flames
1868-0D6C No Fireballs, Sonic Booms or Yoga Fires, makes Yoga Flame invisible