Unlimited Crew Charge:
Press Down, Up, Up, Right, Left, Left, X at the title screen.

Unlimited Nitrous:
Press Left, Up, Left, Down, Left, Down, Right, X at the title screen.

Unlimited Speedbreaker:
Press Down, Right, Right, Left, Right, Up, Down, X at the title screen.

Unlock NFS:C Vinyl:
Press Right, Up, Down, Up, Down, Left, Right, X at the title screen.

Unlock Cardboard Box and Driver Vinyl:
Press Up, Up, Down, Down, Down, Down, Up, X at the title screen.

$10,000.00 added to money balance:
Press Down, Up, Left, Down, Right, Up, X, B at the title screen.
(supplied by: bungee)Edited 10/06/2011 GMT