They say up from enthusiasm 9 your team will play TIE like normal with an enthusiasm by 5.
Normaly enthusiasm goes up between 1 or 2 after a game TIE. But it can happen, that already a day afer it goes already down. The thing is, that the value you can see is just approximate. I guess you´ll need about 4 or 5 games to make it worth playing TIE.