Honda chief officer of motorsport Yasuhisa Arai is confident that the manufacturer can make substantial progress across the remainder of 2015, with a new specification power unit set to be introduced.
Honda returned to Formula 1 as a supplier to McLaren at the start of the year but the partnership has endured a difficult season amid a lack of performance and reliability, leaving the team ninth in the Constructors' championship with 17 points.
Arai is optimistic that Honda will be able to take a step forwards when Formula 1 returns from its summer break at the Belgian Grand Prix.
"I am confident that our reliability problems are now behind us which means we can turn our attention to increasing power," he said.
"After the summer shutdown our plan is to apply a new spec engine using some of our remaining seven tokens.
"Not all of our upgrades will be in place for the Belgium Grand Prix; some parts will be applied for Spa and the rest during the weeks that follow. Our plan is to keep improving race-by-race for the remainder of the season."
Arai is nonetheless braced for the partnership's progress to be further hindered by the probability of further engine penalties across the rest of the year.
"Unfortunately we will have more penalties during the coming months, but you will also see big improvements from both sides – chassis and power unit," he stressed.
"After Spa we aim to improve every race, and hopefully we can start fighting for podiums. We will never stop fighting in 2015."