While at your house, hold L1 + L2 + R1 + R2 + Select + Start to go to the car setup/tune page. This saves a lot of time, as you can set your car up for arcade races without first starting a race, then tuning, then going back to the main menu. Additionally, when at the screen where you select to go into the Garage, Status, Diary, etc. and are in the car that you want to tune, simply press Start. You will be sent to the tune car screen.
