The Catalans have clicked into form ever since the club seemed on the brink of an institutional crisis following a dressing room revolt after a shock 1-0 defeat to Real Sociedad to start the year.
Even more judicial activity against the club and its president Josep Maria Bartomeu for tax irregularities in the signing of Neymar hasn't disrupted Barca's rhythm.
The Brazilian forward has played a starring role in the run alongside Lionel Messi and Luis Suarez.
"We are getting better every day, but we need to continue working hard to improve," said Neymar, who has scored 23 times in 27 appearances this season.
More From This Section
"More than just the goals, the most important thing is to help my teammates. We can't stop now, we need to keep going."
Captain Xavi Hernandez returned to the side for Barca's first league victory in the Basque country since 2010 and the veteran is determined to keep their momentum going on all fronts, with a return to Champions League action against Manchester City also to come at the end of the month.