To get your call fully upgraded, you must first win the Burger King Challenge(see the "Burger King Challenge" cheat for instructions on how to unlock it) to unlock all Junkman parts. Get any car and put all the parts on it except for performance. Then, go to the performance shop and max out your car again. Then, put the Junkman parts on again. Your car should be fully upgraded now.
To lower your Heat level, enter a Stop Shop and change the color of your car. Leave and then press Up to re-enter the Stop Shop and change the car back to its original color. Your Heat will lower by 1 and this can be repeated.
To unlock the Burger King Challenge, at the "Press Start" screen, press UP, DOWN, UP, DOWN, LEFT, RIGHT, LEFT, RIGHT. Then, from the Main Menu select "Challenge Series" and scroll all the way down to find it. After completing the Burger King Challenge you will be able to use all Junkman parts on cars that you have in "My Cars".
Reach the following Heat levels by performing the corresponding tasks:
HEAT LEVEL - HOW TO UNLOCK Heat level 3 (State Police) - Defeat the Blacklist Rival #13. Heat level 4 (Undercover State Troopers) - Defeat the Blacklist Rival #9. Heat level 5 (Federal Authorities) - Defeat the Blacklist #5 rival. After you beat the Rockport's Most Wanted level, Heat level 5 will then consist of both the Federal Authorities and Cross' Street Racin' Unit. Heat level 6 (Undercover Federal Authorities) - On the final challenge (Challenge Series mode) and on the final level of Campaign mode. Sgt. Cross joins in the pursuit on the final level.
To increase the handling of the Lamborghini, Porsche, Corvette, and Viper, go to "Performance Tuning" and set the "Height" to "-1". To increase the gripping power, set the "Height" to "-1" or set the "Aerodynamics" to "+1".
To easily earn money, defeat an opponent on the blacklist and you will receive two marks that can be used on several different things. Do not use them on the Uniques early in the game. Instead, use them on the middle or the left "Random" choices. They should come out to either a large cash bonus or the opponent's pink slip.
To easily get bounty, get the police to chase you and go then go to the bus stop. Get on top of the buses and make sure that the front of the car is at the edge of the last bus so the cops can see you. Keep looking behind until the cops get on top of the buses. When they get on top of the buses, hit reverse to push them off. Reapeat as desired. When you want to lose them, just park in the middle of the buses and wait until your CoolDown bar becomes full.
When selling a car, you normally only receive half of its value. However, there is a trick that works for Pinkslips that you have won. Take your car into the shop and go to the parts area. Go into the body kit, hood, rims, roof air areas, and spoiler and set everything to stock. When you checkout, you will see anywhere from $1,000 to $18,000 depending on the Pinkslip. After stripping the accessories, go to your safe house and sell the car. You will have made extra money on the side. Note: Do not attempt to set performance parts to stock or else you will be charged for downgrading.
-When your Heat level is high and you need to Cool Down, go to the bus terminal. Drive up the ramp and stop at the top of it, then turn and drive in the middle of the walkway. Wait there and the cops will eventually drive away.
-Another spot to Cool Down at is the baseball field. Look on the map for the small triangle near the top left. Drive through the entrance of the baseball field while hitting pursuit breaker on your way in. Just sit and wait there until you Cool Down.