There are three classes in Mafia Wars. If you picked one of the two classes that gives you 5:00 when you first start the game, that will change to 4:30 after finishing New York. If you picked "faster energy" for your class when you start the game, you get 3:00 when you first start the game. That will change to 2:30 after finishing New York. You can currently spend Godfather points to change your class.