The 62-year-old Netherlands boss claims a trip to Istanbul to face Turkey will prepare his side for similar experiences in Brazil next year, where he expects a testing environment
Oranje travel to Istanbul knowing they are already assured a place at Brazil 2014 but the hosts still have everything to play for as they look to secure a play-off spot at the expense of Romania and Hungary in Group D.
Van Gaal is curious to find out how his side will cope with the pressure of a frenzied home support urging Fatih Terim's men to victory as the atmosphere will be the same in Brazil next year.
"It will be interesting to see how the guys will deal with it [the expected hostile environment]," he told reporters. "That's why this game is also important for us. The environment in Brazil will be the same.
"The football fans in Turkey are incredible. As a player I loved that. I had no problems with that. I think the players also. But we will actually know that tomorrow."
The 62-year-old has also started the mind games by telling Turkish journalists that Romania are now favourites to land a play-off place for the World Cup, with crucial ranking points still up for grabs for his side.
"[Romania are favourites]. You know why? Because we will defeat Turkey. We will do our very best to beat them," he added.
"I said that already after our first game against Turkey, they are the best after Holland in our group.
"It's funny that they are actually second at the moment. On the other hand, I could be wrong in the end. Because we really want to defeat Turkey to get points for the Fifa ranking."