G:Super Monaco GP 2 (J)

C:High Speed (See Note)|00C2-319D|Rune|This code gives you relatively high speed until you hit something. Then you slow to a stop, until the code brings you back to speed again. Turn this code off once you've finished the race.
C:Always Super High Speed|00C5-1799|Rune|This code will make your car always have 300~ mph!. If you modify the '99' to 'FF', it'll say you're going about 500~ mph (!), but you're actually stuck in one spot. Bah. Turn this code off once you've finished the race.