Dortmund have won 10 and drawn two since the winter break for a near-perfect second half of the season, extending their unbeaten run to 23 matches and climbing to 66 points.
Bayern, winners of nine in a row in all competitions, are only three points behind and their president, Uli Hoeness, has said the game will be the culmination of their "war of attrition" which will finally pay off.
Borussia CEO Hans-Joachim Watzke (pictured) shrugged off Bayern's mind games.
"You don't win a game with psycho strategies. I just don't think it is possible so it bounces off us," Watzke said.
"Our players are cracking up laughing with this Bayern talk. Ours is a new generation of players who just love to play football and want to win the next match."
"We are under bigger pressure because we are three points behind," said Bayern CEO Karl-Heinz Rummenigge. "We can kiss the title goodbye if we lose. We have respect but we are not afraid of Dortmund."
Dortmund could have playmaker Mario Gotze back in the squad for the first time since the 19-year-old Germany international's groin injury in late January.
"Obviously it will be a tough game but with our fans backing us and the floodlights on for the evening game, that is pure motivation for us," said Dortmund's Ilkay Guendogan, who scored in their 3-1 win over VfL Wolfsburg.
"We are just happy to be playing such a game," said the Germany international.
