To get a blow-off valve
Type in markskaife at the main screen.
Simulation handling
Go to Bonus Codes in the Options menu then input "SIM".
Realistic Damage
Go to Options then Bonus Codes.Enter- "Damage".
Get All Tracks
Go to Options then Bonus Codes. Enter- TMYTKO.
Get All Cars
Go to Options then Bonus Codes. Enter- XKIMCF.