Best Ending

Use this trick to see one of the best endings the easy way. Enable the Harder Game mode, then set Difficulty to One Star and beat the game.

Character Profiles

Hold L + R on both controllers during the start screen and you will see the character  profiles one by one.

No Special Techniques

Turn on the game. When the Capcom logo appears, quickly press Down, R, Up, L, Y, B. You'll hear a chime if the code worked. When you begin a one-player game, you'll notice that all of your Special Techniques have been disabled!

Super Speed

Turn on the game and wait for the screen that shows the Street Fighter II logo in the background against a black screen. When this appears, quickly press Down, R, Up, L, Y, B on Controller Two. You must complete this code as the second screen showing the giant Turbo logo appears. You'll hear a chime if the code worked. At the Title Screen, you'll have the option of raising the Turbo speed up as high as ten stars! Go for it!

Ryu's Moves

Air Moves in Turbo Mode

In turbo mode, you can do certain moves in the air. What you have to do is jump in the air and do the button combination for that certain move here are all the ones I have found: Ryu & Ken: Down, Down-Back, Back, Kick Chun Li: Hold down for 3 seconds, then up and kick simeltaneously (this is hard, but it can be done)

Note: Air Moves will not work in Normal mode.