Ridge Racer Type 4 Cheats

Playstation

Get A Turbo Boost
While playing Press L2+R2
Unlock All 320 Cars Cheat
In Grand Prix Mode in the middle of the first race Press Start then Square, Square, Square, Circle, Circle, Circle, Circle, Triangle, Triangle.
Extra Cars
Unlock all 320 cars then you can access Pac-Man and Sony Eat'em up in Attack Mode.