Spirit-X

Cheat Mode:
Start the game. Press [SHIFT] + [~] to open the game Console. Enter your codes.

breakwin:
Cause the windows on your vehicle to be broken

timescale:
Display the current game speed

timescale:
Change the game speed

ai_enable <0/1>:
Disable/Enable the Artificial Intelligence of enemy drivers

transport:
Teleports your vehicle to another location on the track

givemethepower:
Toggle infinite adrenalin (used for Nitro Boost & Adrenalin Devices)

devilsmachine:
Toggle all andrenalin devices mode (gives you most of the powerups along the top of the screen)

nightmare:
Enemies enforced

keymaster:
Tracks unlocked (you must have a profile loaded for this to work, and you must not be in the track selection screen)

elixir:
Toggle Invulnerability mode

ghostintheshelter:
Toggle Invisibility (makes enemy drivers ignore you?)

lightspeed:
Toggle max speed survive.

makemerich:
1000000 gold added to local player

makemerich:
Adds the specified # of gold to your account (can be negative too, for whatever reason you would do that)

pl_addmoney:
(same effect as 'makemerich' above)

robinhood:
Players received/lost some money

skipstage:
Advance Stage (assumed this would skip a race of a championship/contract, but it seems to have no effect other than crashing the game if you run it too many times)

sidelights:
Turn the sidelights off/on (seems to be the rear lights on some vehicles)