The following are known Action Replay Codes for GP-1 Part II on Super Nintendo (SNES).

These codes are for the U.S. version of the game.

• Player 1: Auto Race at 199 MPH
  7E04AC3F
  7E04AD01
  Note: Switch this code off at the end of the race.
• Player 2: Auto Race at 199 MPH
  7E042C3F
  7E042D01
  Note: Switch this code off at the end of the race.
• Set Low Total Time (Seconds)
  7E485100
• Set Low Total Time (Milliseconds)
  7E485200
• Set Low Lap Time (Seconds)
  7E4D8100
• Set Low Lap Time (Milliseconds)
  7E4D8200