Need For Speed 3 Cheats (PC)

Type the cheats below at any menu to activate the cheat. 
  madland - Unknown.
  rushhour - Race with lots of traffic on the road.
  empire - Race on the Empire City track.
  elninor - Race with the El Nino car.
  merc - Race with the Mercedes CLK GTR.
  gofast - Make your car go super fast in Single Race mode.
  allcars - Enable all cars including Pursuit Vehicles. jag - Race with Jaguar XJR-15. 

  Enter these cheats at the single player menu. Then click race.

  go01 -Miata
  go02 -Toyota Landcruiser
  go03 -Cargo Truck
  go04 -BMW 5 Series
  go05 -71 Plymouth Cuda
  go06 -Ford Pickup with Camper Shell
  go07 -Jeep Cherokee
  go08 -Ford Fullsize Van
  go09 -64/65 Mustang
  go10 -~66 Chevy Pickup
  go11 -Range Rover
  go12 -School bus
  go13 -Taxi - Caprice Classic
  go14 -Chevy Cargo Van
  go15 -Volvo Station Wagon
  go16 -Sedan
  go17 -Crown Victoria Cop Car
  go18 -Mitsubishi Eclipse Cop Car
  go19 -Grand Am Cop Car
  go20 -Range Rover Cop Car/Ranger Vehicle
  go21 -Cargo Truck (same as 03)

To activate the cheat you MUST be in SINGLRACE mode. At the MAINMENU screen type GOFAST
and pick the Mercedes CLK GTR and choose Hometown. Turn the opponents off and the traffic
off so you can gain speed to fly right over the Cover Bridges. The cheat will allow you to
fly over the  second Cover Bridge. Have fun!

Type Bullhorn at the main menu, in hot pursuit. You MUST NOT BE A POLICE CRUISER.

On the Empire track just before the first bend to the left there is a dark alley.  Go
through the alley and at the end of the alley, do not follow the track just turn a little
to the left and aim directly for the road works blocking off another dark alley.  This
will take you directly through two long steep bends.

Go to the Atlantica track, in any mode, and start the race. As you near the left-hand
curve right before the dock, go clear to the right and there should be a open tunnel with
wooden planks on the bottom, go through it, and it eliminates the whole curve!

T to type at mean menu to enable: 
  Effect Code
  Jaguar XJR-15 bonus car jag
  El nino pursuit car - ecop
  diablo pursuit car - dcop
  all secret pursuit cars - newcars
  all cars are fast in single race - madland
  use a manuel transmission like a automatic - monkey