Performance Tuning Performance tuning is modifing a car to do the abilities you want to do. To axcess performance tuning you press start, and go right two times then then you will open up the option called "Performance Tuning". Once you do that you will see something similiar to this: Steering-------+------- Handling-------+------- Ride Height-------+------- Brakes-------+------- Aerodynamics-------+------- Nitrus-------+------- Turbo-------+------- Steering: To tune your steering you have to buy a suspension kit. Tuning the steering will determon the steering sensitivity of your car. Handling: To tune your handling you have to buy a suspension kit. Tuning the handling will tune how well handling is of your car. Ride Height: To tune the ride height you have to buy a suspension kit. Tuning the ride height can make your car go lower or higher. Brakes: To tune your brakes you have to buy after market brakes. Tuning your brakes will determon the effectiveness of your brakes. Aerodynamics: To tune your aerodynamics you need to buy a spoiler. Tuning you aerodynanics will make the wind flow off your car easier or more resistant. Nitrus: To tune your nitrus you need to buy nitrus. Tuning you nitrus will change the effectiveness and legnth of your nitrus. Examples: More will make the nitrus more effective but it will be only for a breif moment. Less will make the nitrus less effective but it will be for a longer peroid of time. Turbo: To tune your turbo you need to buy a turbo kit. Tuning yur turbo will modify how your turbo will perform and sound.