To  use  these  cheat codes, goto the main menu and click "Create
Player"  and type in the cheat for the name. Click "Done" (you'll hear
a  little  confirmation  sound).  Then choose your regular profile and
play the game!

Gulliver
     The  Porsches are all shrunk down to the size of radio controlled
racers and have little antennas.

Smash Up
     Using  the  Skidpad,  Destruction  Derby  style  racing - nothing
better than that!

Dakar
     Tired of Street Racing? Changes car physics and tracks to Rally style.

Fuzzyfuz
     Enables  cops  in  quick race (cops may not appear on all tracks:
i.e.-Monaco).

yraGyraG
     Enables all cars to have 993 physics.

fetherw8
     This cheat code makes cars way heavier.

Booster for Speed 
     Go  to  the  (Single  Player  mode) and put in "freewill" as your
name.  Now  in  every  race you do you can double your speed, breaking
every record.