$10,000 - Have a saved game file from Need For Speed: Underground 2 on your memory card to get an extra $10,000 in Career mode after the prologue.
Avoid and remove strikes - After getting busted and taking a strike, turn off the system the next time you get pulled over. Resume the game and those strikes will be removed.
Avoiding impound strikes - If you get busted, during the scene when the cops are wrestling you to the ground, disconnect the controller then reconnect it and you will be at the pause screen. Then, jump to safe house to not get an impound strike.
Avoiding police - Go to the bus terminal with any Heat Level. Normally you would go left or right to take the jump or drive up the middle to take the shortcut. Instead of using the ramps to jump, stop at the apex of the ramp, then turn and drive in the middle of the walkway. Stop there and wait. The cops will not come up the ramp after you if you are in the middle of the walkway. No matter what the Heat Level, the cops will not get you and they will eventually drive away.
Better car performance - After upgrading your car with engines, suspension, brakes, etc., pause the game and go to "Performance Tuning". For better handling for the Lamborghini, Porsche, Corvette, and Viper, set the "Height" of you car to "-1". If you need more gripping power either take the "Height" to "-2" or set the "Aerodynamics" to "+1". If you go overboard with the performance tuning options (anything past "+3" or "-3"), the car will actually handle worse.
Blacklist cars - Defeat the indicated Blacklist Rival to win the corresponding car:
Blacklist cars - If you win the Pinkslips to a Blacklist car, you may want to use the Blacklist car as your own and make the necessary upgrades to performance, as most of the upgrades will have been already made by the Blacklist owner. You usually do not need to spend too much money to increase the performance, handling, etc. Sometimes these cars will have upgrades that have not been unlocked yet, but most of these are usually visual. Only do this if the vehicle you have won has better attributes than the one you are currently driving in its standard mode. You can check this out in the car shop. It is a good idea to keep about three to five nice quick cars in your safehouse.
Blacklist milestones - Blacklist milestones are things you need to do to rack up your bounty so you can challenge the next person on the Blacklist. Check these out so you know what you need to do to increase your points. Once the milestones are completed, you must work on increasing the points. The best way to do this is to cause as much major damage as possible by taking out police cars, traffic, and crashing through shops (for example, the donut shop and other places you will notice in the later levels). Try to rack up as much bounty and escape before your status has reached level 4. If your status is already level 4, then choose a different car for awhile until the status goes down before returning to your preferred car. Once your status hits level 4, it is harder to get into Cool Down mode to find somewhere to hide. Avoid getting caught, as you will lose the bounty you have racked up during the chase.
Burger King Challenge - At the "Press Start" screen, press Up, Down, Up, Down, Left, Right, Left, Right. If you entered the code correctly, a message will appear stating that you have unlocked a "Special Challenge Event" will appear. At the main menu, select the "Challenge Series" option. Scroll all the way to the bottom and choose #59, the Burger King Challenge. Successfully complete the challenge to be able to use all Junkman parts on cars you have in "My Cars". Note: Before applying Junkman parts, press A in the performance parts place to get them as high as they can go, then apply Junkman to each part. By doing this, it gives better stat raises.
Car upgrade test - If you are unsure which car is the best to use when upgraded, you can upgrade all the cars that are unlocked for free in the main menu. Go to "My Cars", select a car that is available, and upgrade it with the parts that are available. By doing this, you will not waste all your money in Career mode.
Castrol Syntec Ford GT - At the "Press Start" screen, press Left, Right, Left, Right, Up, Down, Up, Down to unlock the Castrol Syntec Ford GT.
Easy bounty - Get some cops to chase you, 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 that the cops can see you and do not lose you. Keep looking behind you, because the cops will sometimes find a way on top of the buses. When they do get on the buses, just reverse as soon as you see them coming and push them off. Only one cop car will come on top of the bus. Do this for as long as desired. When you want to lose them, just reverse, park in the middle of the buses, and wait until your Cool Down bar fills. The cops will also drive crazy and crash into themselves, giving you extra bounty and bring up your rap sheet rankings on police vehicles immobilized and police vehicles involved.
Easy money - Find an easy race such as a drag or something short that you can win quickly. Win the race and get the money. Go back to the safe house and start the race again. Win the race to get the same amount of money again. Repeat this process as much as desired. This is quite useful when you need that extra bit of power to defeat a Blacklist Rival, but don't have the money for a better car or parts.
Easy upgrades - Before you can do anything, you must win the Burger King Challenge. Once you win it, you will unlock all unique parts (also called Junkman parts). Get any car and put all the parts on it except performance. Once you have your car the way you desire, go to the performance shop. Max out your car, then put the Junkman parts on. Max out your car again. Then put on the Junkman parts again. Your car should be fully upgraded now.
Getting the most money when selling your car - When you sell a car, you will only get half of its list value; however, there is a trick that works well for Pinkslips that you have won and no longer want. Take your car to the shop, then go to the parts area. Go into the body kit, spoiler, hood, rims, and roof air areas and set everything to stock. When you check out, you will see anywhere from $1,000 to $18,000, depending on what Pinkslip car you are stripping. Do not try this with performance parts. The shop will charge you money for downgrading. Once you have stripped your car of all accessories, leave and go to your safe house. Sell the car, and you will have made a lot of money on the side. Do this every time you intend to sell any car.
Higher Heat levels - You start Campaign mode only being able to achieve Heat levels 1 and 2 (City Police). By defeating certain Blacklist Rivals, you can then achieve the higher Heat levels:
Levels of police action - The various levels of police action are as follows:
Nitrous and grip - Hitting nitrous torques the chassis back, giving the rear tires immensely more weight under the new acceleration. The end effect is that you will go straight. If your tail is sliding out or you are about to spin out of control, hit your nitrous to get straighten out. This is a great trick in combination with Speedbreaker. With the correct timing, you can take most corners at any speed.
Nitrous boosting - It is critical when you get past Blacklist Member #6 to use your nitrous wisely and strategically. Instead of just holding Nitrous in desperation to get ahead, press and release it when the tachometer is about to shift to the next gear. Upon the next gear shift, continue pressing Nitrous until the next upcoming gear shift. This is a great way to cut time off your race.
One Stop Shop marker - At the "Press Start" screen, press Up(2), Down(2), Left, Right, Up, Down to unlock a special marker for the Junkman Engine part in the back room of the One Stop Shop in Career mode. Note: This code can only be enabled once per career.
Porsche Cayman - At the "Press Start" screen, press L, R(3), Right, Left, Right, Down to unlock the Porsche Cayman.
Quick start - Get a perfect launch on your tachometer when launching from the start line to get a boost. When the needle turns blue drop the clutch and hold on.
Recommended car - The best start car to use until you get the Eclipse is the Cobalt SS. When you win blacklist races, try for the three "?" markers. You can get cash or the pink slip car. If you get their car, go to the safe house and sell it. You can get good money by doing this, and get unique upgrades after you start getting into the visuals (after you switch from the Cobalt). After you defeat Ming and get get his Lamborghini, it should make progressing further in the game easier. When you get his Lamborghini, go to the tuner shop and add in any upgrades needed for performance.
Regaining control - When approaching a corner at a high speed, quickly assess whether or not you can get through it cleanly as fast as possible and without touching the inside or outside barriers. If you start drifting (or worse, careening out of control) toward a barrier, turn on your Speedbreaker in order to regain control via increased handling and traction. During this period of slowed time, straighten out your car and put it back into an ideal racing line. Once you are straight and driving in the correct direction, quickly turn off Speedbreaker and hit the Nitrous hard to rip out of the remainder of the corner.