Sauber head to Barcelona with a modified rear wing that Tom McCullough is hoping will go someway towards solving their C32's issues.
Sauber have been off the pace this season with rear end stability billed as one of their key issues.
As a result the team has struggled with Nico Hulkenberg scoring just five points while Esteban Gutierrez has yet to get off the mark.
In a bid to turn their ailing fortunes around Sauber will head to Spain with a new rear wing which head of track engineering Tom McCullough says they will evaluate on Friday before deciding whether to proceed with it.
"We have some further aero updates, including a modified rear wing, and we will be evaluating these during Friday practice," he said.
The team, which has just one top-ten grid position this season, is also hoping for better in qualifying and for that to translate into points come Sunday.
"Qualifying is particularly important here as overtaking can be difficult in the race," McCullough added.
"Our target for the race is to finish with both cars in the points."