Sauber will have further updates for their C32 when they race around the streets of Monte Carlo next weekend.
Sauber have managed just five points in five grands prix as the team has battled - and failed - to recreate the magic of last season when they achieved four top-three results.
As such the midfield outfit introduced several updates for their car in Barcelona where Esteban Gutierrez narrowly missed out on his first point, finishing 11th.
Heading to Monaco next weekend, Sauber will once again be trying out new parts in a bid to get back on track.
"We have some further updated aero parts to add to the package we took to Barcelona," revealed Tom McCullough, Sauber's head of track engineering.
"Coming off the back of our better race pace in Barcelona, our aim is to qualify stronger, as this is particularly important in Monaco where overtaking is so difficult.
"The circuit in Monaco is a real challenge for the drivers and the team. The track improves throughout the weekend and it's important to give the drivers a set-up that gives them confidence as the barriers are very close."