fzerox

All Cars, Tracks and Difficulties
At the Mode Select screen, press L, Z, R, C-UP, C-DOWN, C-LEFT, C-RIGHT, START. You should hear a chime if you did it correcly.

Change Car Colors
To change your car's colors, simply press the R-Button during the car customization screen. Note that there are only a few select colors for each vehicle.

End Credits and Final Six cars
Beat the Jack, Queen, King and Joker Cup on Novice, Standard and Expert difficulty to see the game's end credits. After resetting the machine, the title screen and intro music will change and the final row of six cars will be selectable.

Fall through track in Port Town
To fall to in Port Town first you have to be on the second lap then right before the first speed boost use the booster.In the air turn untill you see two signs.then land.
submitted by Alex Williamson

Ghost Times
If you beat a certain time in the Time Attact Mode, you will unlock a ghost which is hard to beat (harder than the Master Mode.) Here are the times:

Mute City         1:23:000
Silence           1:13:000
Sand Ocean        1:15:550
Devil's Forest    1:23:000
Big Blue          1:35:000
Port Town         1:36:000
Sector A          1:22:000
Red Canyon        1:19:000
Devil's Forest 2 1:24:200
Mute City 2       1:19:000
Big Blue 2        1:07:000
White Land        1:40:000
Fire Field        1:23:000
Silence 2         1:35:000
Sector B          1:45:000
Red Canyon 2      1:40:000
White Land 2      1:13:000
Mute City 3       1:46:000
Rainbow Road      2:11:000
Devil's Forest 3 1:20:000
Space Plant       2:04:000
Sand Ocean        1:35:000
Port Town 2       1:52:700
Big Hand          2:27:000