In any level, if you fully complete the Hot Pursuit game type, a new police car will be available (Corvette etc.) for that level. Complete that level using the new cop car in Hot Pursuit mode to unlock the Diablo police car for that level.
for police helicopter enter whirly as name (can only be used in test drive)
for phantom enter flash as name
note: save game is disabled while these and titan cheats is activatd
After selecting your car, press Start to load the race, then before the loading screen appears, immediately hold Left + Square + Circle. Continue to hold the buttons until the loading screen disappears
To get a really good car is go to options then username and type the word flash
at the user name at options enter hotrod and you will get a cool car, named titan.
enable turbo mode then enter the same code again.
After selecting your car, press Start to load the race, then before the loading screen appears, immediately hold Up + L2 + R1. Continue to hold the buttons until the loading screen disappears. The screen will now be blurred, with ten cars appearing in place of one.
pick a car and start the race immediately hold
up+L2+R1 through the loading screen. the screen will now be blurred as if u were drunk.
If you have 2 memory cards, save the game on both and enter high stakes. Sell the cars and this gives u more money.
press left, circle and square till disappears.
flip cars by hittin em
In the username type PHANTOM and you'll be given a car which has very similar stats to the McLaren or CLK-GTR although i think it's a bit better.
enter nfs_pd as name to use every police cars from different levels.
Note: "_" indicates a space.
go to options, user name and type "hotrod"
to get the turbo mode, before the loading screen appears press up triangle x at once together, then when you play press up and you will sprint like a roket.