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Playstation 2 - Kaidou Battle 2: Chain Reaction cheats

The following codes must be entere in the main screen for Record Challenge.
Hold R1 and R2 while putting the codes in. 

Unlock All Courses: Enter DOWN, UP, DOWN, UP, LEFT, RIGHT, LEFT, RIGHT 
Unlock All Normal Cars: Enter RIGHT, LEFT, RIGHT, LEFT, DOWN, UP, DOWN, UP