Jenson Button is looking for McLaren to land a heavyweight blow in Germany next weekend after believing the team has recently punched above its weight.
McLaren were forced to abandon plans to run with their version of the exhaust blown diffuser after struggling during Friday practice ahead of the British Grand Prix.
It led to the team's mechanics and engineers burning the midnight oil to return the car to the set-up used in the European Grand Prix in Valencia a fortnight earlier.
Button and team-mate Lewis Hamilton still managed a superb fourth and second respectively at Silverstone behind race-winner Mark Webber in his Red Bull.
Button, however, admits to being concerned at the growing pace of his rivals, which is why he is hoping McLaren can again roll out the new system with greater effect at Hockenheim from next Friday.
"We saw ourselves at Silverstone it's not easy to arrive at a track and simply 'switch on' a new package," said Button.
"It requires quite a bit of effort, so I think over the next few races we're going to see a lot of the top teams further fine-tuning their refinements.
"So we can't afford to stand still, and we're not.
"I think we've perhaps punched above our weight at the last two races, which is great for us, but we're not standing still.
"At the moment, we're hopeful of taking the blown diffuser to Hockenheim to run it on Friday.
"We learnt quite a bit about it from the day at Silverstone, and I hope we'll be in a position to get it working more effectively at the German Grand Prix."
Although still unable to match the pace of the Red Bulls, Hamilton has again re-iterated that he feels the current McLaren is the best he has driven in Formula One.
That is underlined by a haul of 86 points out of 100 from his last four races which sees him leading the way in the championship by 12 points over Button.
"Wow, 86 points from 100? That's 86 per cent - I'd have loved those marks when I was at school!" exclaimed Hamilton, who has won twice and finished runner-up twice in those four grands prix.
"I've said it before but I think I'm able to get those kinds of results because our car is just so fantastic to drive.
"My car in 2008 was fantastic, but even though we're not quite as quick as the Red Bull, this year's car is still the best Formula One car I've ever driven.
"You can just plant it, particularly through the high-speed stuff, and the car will just go where you tell it.
"As a driver that gives you so much confidence, so you're not worrying about the car, you're just focusing on the racing.
"When you're having fun out there, the results just come. So I'm just incredibly happy at the moment.
"Eighty six points out of 100 - I still can't believe that!"