Force India is set for a "comprehensive" upgrade of its Mercedes-powered VJM09 at this weekend's fifth round of the season in Spain.
Force India has endured a challenging start to the 2016 campaign, scoring only eight points across the opening four races to sit eighth in the Constructors' championship.
Sergio Perez collected his first points of the year in Russia and believes Friday's running at the Circuit de Barcelona-Catalunya will be crucial to the outfit.
"Barcelona will be the first chance to run our updated car," said Perez.
"It’s going to be a huge task to understand everything on Friday, but it’s always exciting to try new parts on the car.
"It’s been a difficult start to the year, but it feels like the momentum is changing now and the performance in Sochi was a big boost for all of us."
Team Principal Vijay Mallya says his outfit's VJM09 will "look quite different" when it runs on Friday and is optimistic that progress can now be made.
"We’ve yet to see how we perform in a clean, trouble-free race without safety cars, red flags or accidents," he said.
"Despite not realising our potential in Sochi, we took encouragement from our qualifying and race pace: the car is improving and we’ve got a good base on which to build."