Force India team principal Vijay Mallya says the squad is aware that it faces a steep uphill curve as it prepares to introduce its extensive upgrade package - in effect a 'B spec' car - at this weekend's British Grand Prix.
Force India has been using a comparatively underdeveloped car across the first half of the season, though Nico Hulkenberg and Sergio Perez have been able to collect sufficient points to leave the Silverstone-based outfit in fifth place in the Constructors' championship.
Some parts were introduced at last week's test but the main package will make its debut at the British circuit this weekend, with Mallya warning that it may take the team some time to understand the changes.
"We come to Silverstone off the back of two strong results in Canada and Austria, two races that have been a big boost for everyone in the team," explained Mallya.
"As we approach the mid-season point, being fifth in the championship is an tremendous achievement, especially when you take into consideration our start to the season. It’s a reward for the hard work by everyone in the team, both at the factory and trackside.
"Our recent results are an excellent platform to build on for the second part of the season, with our eagerly-awaited upgrade package making its debut in Silverstone.
"Everyone is full of anticipation, but we know it will be a very steep learning curve to fully understand and get on top of the changes in just a few free practice sessions. However, I remain optimistic we will see progress sooner rather than later."