Use the following steps to get a rank with a best time of up to 1 hour:
Drive north until you have to make a left turn. Take the freeway until you get to the alleyway bridge. Lose the cops on the bridge and stop. The police cars cannot regenerate on an alleyway.
Drive to LAX (L.A. Airport), and avoid using the oncoming traffic lanes to get there. Once at the airport, drive to the south parking lot. Then, lose the cops in the parking lot.
You will start in front of a park with a cop behind you. Lose the cop by turning around into the park. Lose the cop in the park and stop. The police cars cannot regenerate on a park area.
To unlock the Cheat Menu you must enter in the following code at the Main Menu screen.
Hightlight "UNDERCOVER" and hit UP, UP, DOWN, DOWN, UP, DOWN, UP, DOWN, UP, UP, DOWN AND DOWN.
Another menu option will be available to you called Cheats. Access this option and turn on or off any of the option by pressing RIGHT to activate and pressing LEFT to de-activate.
1 face, face, face, face
2 tire mark, badge, cone, red siren
3 stop light, key, key, blue siren
4 cone, cone, cone, badge
5 key, red siren, siren, stoplight
6 key, badge, tire mark, blue siren
7 badge, cone, badge, red siren
8 Red Siren, Badge, Key, Tire Tread
9 Cone, Blue Siren, Red Siren, Red Siren
10 Badge, Badge, Stoplight, Cone
11 Blue Siren, Key, Key, Key
12 Stoplight, Tire Tread, Red Siren, Badge
13 Key, Badge, Badge, Cone
14 Red Siren, Blue Siren, Red Siren, Blue Siren
15 Tire Tread, Key, Cone, Stoplight