Howells said: "It is all about the performance against Newcastle and showing some kind of progression. Obviously a result would be fantastic, but I don't think we are getting ourselves into that sort of position at the moment.
"A big performance is the main thing, and seeing what the players can do. It is good for the players to see themselves in that environment and Saturday is a big day for us."
Romanian side Bucharest, known as the Wolves, is made up of the top players in the country but they have had little more than a couple of weeks to prepare for the visit of Newcastle.
The Falcons have made a mixed start to their first season back in the Premiership but with a trip to Brive to come after their game in Romania, 20-year-old lock Dom Barrow is looking forward his first taste of European rugby.
"It is always exciting to visit new countries and to play in different venues," said Barrow. "Momentum is the main thing and if we can keep that going through the European fortnight then the whole club will benefit.
"If I am involved it will be my first experience of European rugby, but the main thing is just keeping the momentum going. That is the same regardless of what competition we are playing in and as a group we just want to keep performing."