Ascari KZ1 
     Enter  "KNOX"  as  a DNA Lab code to unlock the Last Man Standing
challenge.  Win  the  Last Man Standing challenge to unlock the Ascari
KZ1.

Audi TT 1.8 Quattro 
     Enter "YTHZ" as a DNA Lab code to unlock a special challenge. 
Win that challenge to unlock the Audi TT 1.8 Quattro.

BMW Z4 Roadster 
     Enter "GVDL" as a DNA Lab code to unlock a special challenge. 
Win that challenge to unlock the BMW Z4 Roadster.

Holden Monaro 
     Enter "RBSG" as a DNA Lab code to unlock a special challenge. 
Win that challenge to unlock the Holden Monaro.

Hyundai Coupe 2.7 V6 
     Enter "BSLU" as a DNA Lab code to unlock a special challenge. 
Win that challenge to unlock the Hyundai Coupe 2.7 V6.

Infinity G35 
     Enter "MRHC" as a DNA Lab code to unlock a special challenge. 
Win that challenge to unlock the Infinity G35.

Infinity G35 (red design) 
     Enter "MNCH" as a DNA Lab code to unlock a special challenge. 
Win that challenge to unlock the Infinity G35 (red design).

Koenigsegg CCX 
     Enter "KDTR" as a DNA Lab code to unlock a special challenge. 
Win that challenge to unlock the Koenigsegg CCX.

Mitsubishi Prototype X 
     Enter "DOPX" as a DNA Lab code to unlock a special challenge. 
Win that challenge to unlock the Mitsubishi Prototype X.

Nissan 350Z 
     Enter "PRGN" as a DNA Lab code to unlock a special challenge. 
Win that challenge to unlock the Nissan 350Z.

Nissan Skyline R34 GT-R 
     Enter  "JWRS"  as  a DNA Lab code to unlock the Retail challenge.
Win the Retail challenge to unlock the Nissan Skyline R34 GT-R.

Saleen S7 
     Enter "WIKF" as a DNA Lab code to unlock a special challenge. Win
that challenge to unlock the Saleen S7.

Seat Leon Cupra R 
     Enter "FAMQ" as a DNA Lab code to unlock a special challenge. 
Win that challenge to unlock the Seat Leon Cupra R.

Easy money 
     Once  the World Class League is unlocked, you will be required to
make  a profit of $200,000. Go to this event, and spectate Air Trauma.
Bet  on Crystal; the odds are 20:1. At the very beginning of the race,
cheer  for Crystal, and she will get a full nitrous bar. Make sure the
person  in front of her loses their nitrous every time they gain it by
booing  them.  Keep  doing  this  until  Crystal  has  passed everyone
including  the leader. If she wins the race at the end of 16 laps, you
will win six million dollars.

Recommended car 
     When  starting  the  game  and  you must choose which car to buy,
select  the Mazda RX-8 if you want the fastest in stock out of all the
other  cars.  Two  other good cars to try at the beginning of the game
are the Toyota Corolla GTS and Nissan 200SX.

     For  League 7 cars, the Infiniti G35, Lexus IS300, and Nissan R32
and  R34  are  recommended.  The  Lexus  IS300  is  good for the Drift
Obliterator, Drift King, and Pink Slip races. The Infiniti G35 is good
for  unlocking  performance  mods. The Nissan R32 and R34 are good for
the circuit and drift racing throughout the game.