Arteta is confident going into the crunch first-leg.
The midfielder said: "In the last few big games we have missed the first 20 to 25 minutes and given opponents too much respect.
"We want a different scenario against Bayern, to get into the game and show we want to win it.
"It is one of those games that everyone is ready to play and it is a pleasure to play for this club at this level.
"We have a great chance, we are playing a good team but we are a very good team as well.
"We are very positive and can't wait for the game to come and give a good performance."