The Bavarian side suffered a 2-0 defeat at the Emirates Stadium on matchday three, with Arsene Wenger's men recovering from losses to Dinamo Zagreb and Olympiacos to keep their qualification hopes alive.
However, the Chilean midfielder insists that Bayern will not be so generous to their opponents at Allianz Arena, and says a die Roten victory is the only outcome they are targeting.
"We'll show Arsenal the real Bayern on Wednesday," Vidal told Bild am Sonntag.
"Our confidence is high. This time we'll take our chances and take the three points."
Arsenal enter the tie in excellent form however, having climbed to the top of the Premier League after going unbeaten there since October and won five of their last six matches in all competitions.
A victory for the Gunners would see them draw level with Bayern – who were held to a 0-0 draw by Eintracht Frankfurt in the Bundesliga on Friday – on six points with two Group F games remaining.