NFS Carbon and NFS Underground2 Cheat :D

NFS Carbon :

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

Right, Up, Down, Up, Down, Left, Right, Square      Unlock NFS:C Vinyl

Up, Up, Down, Down, Down, Down, Up, Square     Unlocks Cardboard Box and Driver Vinyl

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

Down, Up, Left, Down, Right, Up, Square, Triangle.     Castrol Cash

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

 

NFS Underground2 :

Left, Left, Right, Square, Square, Right, L1, R1     $1000 in career. RX-8 and Skyline in Quick Race

Up, Down, Up, Down, Down, Up, Right, Left         Unlocks the Best Buy car Vinyl

Up,Up,Up,Left,R1,R1,R1,Down                         $200 in career

Up, Left, Up, Up, Down, Left, Down, Left         Unlocks A Hummer H2 Capone

Up Up Up Up Down Up Up Left                         Burger King vinyl

Down, R1, R1, R1, R2, R2, R2, Square                 All Circuit Tracks

Up, Down, Left, Up, Left, Up, Right, Left         Unlocks the ShineStreet Lexus IS300

Down,Up,Down,Left,L1,L1,L1,Down                 Unique Vinyl

Up, Right, Up, Up, Down, Right, Down, Right         Unlocks the Chingy Lincoln Navigator

Up, Down Right, Up, Left, Down, Right, Right         Unlocks D3 Pontiac GTO

R1, R1, Up, Down, L1, L1, Up, Down             Unlock Visual Level 1

R1, R1, L1, R1, Left, Right, Up, Down             Unlock Performance Level 2

L1, R1, L1, R1, Left, Left, Right, Up             Unlock Performance Level 1

L1, R1, Up, Down, L1, Up, Up, Down             Unlock Visual Level 2