CheatCodes.com has all the official Option Tuning Car Battle 2 PSX cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Sunday May 19, 2013 for Option Tuning Car Battle 2 are shown below.
Enable the "View ending sequence" code. Then, select arcade mode and press R1, Circle, Triangle, Right on controller two.
At the title screen, press R1, Circle, Triangle, Right on controller two.
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