Get over 1242.8 miles (2000 km) on the odometer on a car to unlock the ability to switch engines on that specific car. Successfully complete 100% of the game to switch the engine of any car.
When entering a race at any time and the clock is ticking down, when it reaches "1" press Select and punch the gas. You will take a fast lead against any other racer in the challenge. Note: After the race is over you will need to go to the garage to cool the engine down. This extra turbo boost heats the engine faster. Use this trick wisely.
