Need for Speed: Underground/Upgrades and Parts

Unlike Need for Speed: Hot Pursuit 2, Need for Speed: Underground incorporates customization. The customization is completely different than Need for Speed: High Stakes. The game allows you to extensively change your car's visual and performance with the exchange of in-game currency. Performance upgrades comes in packages with Level 1, Level 2, and Level 3 upgrades and you also choose which brands you want to supply the parts. You can modify the engine/exhaust, the drivetrain, the tires, the ECU/fuel system, the brakes, and the suspension. You can also add weight reduction, nitrous oxide, and a turbo.