At the Main menu enter the following codes to unlock the corresponding effect.

Unlock Infinite Nitrous:
Left, Up, Left, Down, Left, Down, Right, Square.

Unlimited Crew Charge:
Down, Up, Up, Right, Left, Left, Right, Square.

Unlock Extra Money:
Down, Up, Left, Down, Right, Up, Square, Triangle.

Unlimited Speedbreaker:
Down, Right, Right, Left, Right, Up, Down, Square.

Unlock Cardboard Box and Driver Vinyl:
Up, Up, Down, Down, Down, Down, Up, Square.

Unlock NFS:C Vinyl:
Right, Up, Down, Up, Down, Left, Right, Square.
Unlockable Cars
In the Challenge Series menu complete the following events to unlock the corresponding car.

Unlock Mazda RX7 (Tuner):
In the Boss Battle beat Kenji.

Unlock Nissan 240SX (Tuner):
Complete ALL 3 'Checkpoint' challenges.

Unlock Aston Martin DB9 (Exotic):
In Boss Battle mode beat Wolf.

Unlock Jaguar XK 2007 (Exotic):
Complete ALL 3 'Turf War' races.

Unlock Dodge Charger RT Classic (Muscle):
Beat the 21st Muscle Car Gang.


Unlock Crew members
Successfully complete the indicated task to unlock the corresponding crew member:

Unlock Nikki:
Joins after defeating ALL 3 beginning Bosses.

Unlock Sal:
Joins after 4-6 races.

Unlock Yumi:
Joins after defeating Kenji/Bushido.

Unlock Samson:
Joins after defeating Angie/21st Street.

Unlock Colin:
Joins after defeating Wolf/TFK.
At the Cheat menu press Down, Up, Up, Right, Left, Left, Right, Square
At the 'Title' screen enter Down, Up, Left, Down, Right, Up, Square, Triangle