The Swiss squad tried a new rear wing in last weekend's Spanish Grand Prix, which was found to be a step forward.
Chief designer Matt Morris believes that the team now has the foundation for continued improvements.
"Yes, we feel so," he told AUTOSPORT when asked if the rear-end stability had improved.
"It shows in our data and also in the driver comments, so that is positive.
"It's always good when you target things, then you bring them and they do what you expect.
"It's a small step but we need to make a further one."
Although Sauber pairing Nico Hulkenberg and Esteban Gutierrez managed only 15th and 16th in qualifying in Spain, Morris is optimistic about the pace of the Sauber C32.
In the race, the car was stronger, with Gutierrez finishing just three tenths of a second off the points and Hulkenberg losing a strong chance of points when he clipped the rear of Jean-Eric Vergne's Toro Rosso after what was deemed an unsafe release from a pitstop.
"We have closed our race pace performance to our competitors and even on qualifying performance I don't think we are so far away," said Morris.
"But it's clearly not where we want to be and we need to work hard and put some more performance on the car."
Further upgrades are expected for next weekend's Monaco Grand Prix, with the team continuing to push hard on development.
"We have got a lot of stuff in the pipeline," said Morris.
"We have more parts in design at the moment, so as soon as we can get them made we will be bringing them to the track."
Gilles Villeneuve's exploits behind the wheel of a Ferrari made him a legend to the tifosi, even 40 years after his death. The team's current Formula 1 star Charles Leclerc enjoys a similar status, and recently got behind the wheel of a very special car from the French-Canadian’s career
Porpoising has become the key talking point during the 2022 Formula 1 season, as teams battle to come to terms with it. An FIA technical directive ahead of the Canadian Grand Prix and a second stay appearing on the Mercedes cars only served to create a bigger debate and raise tensions further
Having extended his Formula 1 points lead with victory in Canada, Max Verstappen has raised his game further following his 2021 title triumph. Even on the days where Red Bull appears to be second best to Ferrari, Verstappen is getting the most out of the car in each race. So, does he have any weaknesses that his title rivals can exploit?
In 2026, Formula 1 plans to make the switch to a fully sustainable fuel, as the greater automotive world considers its own alternative propulsion methods. Biogasoline and e-fuels both have merit as 'drop-in' fuels but, equally, both have their shortcomings...
OPINION: Carlos Sainz came close to winning in Monaco but needed that race’s specific circumstances for his shot at a maiden Formula 1 victory to appear. Last weekend in Canada, he led the line for Ferrari in Charles Leclerc’s absence from the front. And there’s a key reason why Sainz has turned his 2022 form around
Plenty of high scores but just a single perfect 10 from the first Montreal race in three years, as Max Verstappen fended off late pressure from Carlos Sainz. Here’s Autosport’s assessment on the Formula 1 drivers from the Canadian Grand Prix
On paper the Canadian Grand Prix will go down as Max Verstappen’s latest triumph, fending off late pressure from Carlos Sainz to extend his Formula 1 world championship lead. But as safety car periods, virtual and real, shook up the race Ferrari demonstrated it can take the fight to Red Bull after recent failures
GP Racing’s OLEG KARPOV pays a visit to designer Jens Munser, to observe the production of Mick Schumacher’s special helmet for the Miami Grand Prix. What follows is some fascinating insight on the mindsets of Mick’s dad Michael, and family friend Sebastian Vettel