This cheat makes the timer in blitz mode disappear. It also makes the dashbord disappear. When you are starting the race press your view button and go inside the car. When you are inside look back and while you are doing that press your view button again. Now the timer will be gone. But if you want your time registered, you simply go in the car and just look back. The timer will be running again.
This code can also be used on any other race to get a very good time.