All vehicles and tracks
Quickly press L2 + R1 + R2, R2, L2, R1 + Triangle on controller two at the main menu. The sound of an explosion will confirm correct code entry.
All vehicles and tracks (alternate)
Hold Triangle and quickly press R1 + L2 + R2, R2, L2, R1 on controller two at the game mode selection screen. The sound of an explosion will confirm correct code entry.
Faster cars
Alternatively, use controller two at the game mode selection screen, with the time trial setting and options. Hold Triangle, then hold L2+ R1 + R2. Release L2+ R1 + R2, then quickly press R2, L2, R1 while still holding Triangle. The sound of an explosion will confirm correct code entry.
Secret Cars
To earn the secret cars, satisfy the conditions below:
PCS: Clear the First stage within 4 min.
GTI: Clear the Second stage within 4 min.
DBL: Clear the Third stage within 4 min.
VPR: Destroy $1 million on the First stage and pass the level in the time limit
ELS: Destroy $2.5 million on the Second stage and pass the level in the time limit.
360: Destroy $2.5 million in the Third Stage and pass the level in the time limit.
F1: Pass the First Stage with no damage
PLC: Pass the Second Stage with no damage
TNK: Pass the Third Stage with no damage
GTK: Drive through the speed checker in level 2 at more than 114 mph.
SSP: Drive through the speed checker in level 2 at more than 144 mph.
RCC: Located in the back-left corner of the mall in level 3.
Third Stage Shortcut
Once you get out of the city, head for the spiral ramp. In the pillar you drive around there is a cut-out that is quite small, but can be entered with the VW or motor After that, enter the water area and drive straight to another ramp.