Daniel Ricciardo says Red Bull is expecting power unit supplier Renault to bring a significant evolution for the Canadian Grand Prix.
The French manufacturer updated its engine for the season-opening race in Australia, as it strives to catch up rivals Mercedes and Ferrari.
Asked whether he could feel any extra oomph from Renault’s latest specification, Ricciardo replied: “I do, but we're not talking a massive step yet.
“When you've already got x-hundred amount of horsepower and you get five or 10 extra horsepower, it's not a world of difference.
“You don't really feel an extra kick when you put your foot down.
“But I do feel like sort of top end, at the end of the straight, it just seems to run more, so it has a bit more legs in the last quarter of the straight.”
Ricciardo hopes Renault’s planned upgrade will help further cut the power deficit to the frontrunners.
“Once we get to – at the moment we're talking sort of Montreal - we should have a proper step,” the Australian added.
“And then hopefully I get some whiplash and some good g-forces through my neck!”
Red Bull team principal Christian Horner praised Renault’s progress over the winter after Ricciardo claimed an encouraging fourth-place finish in the 2016 F1 curtain raiser.
The French manufacturer used the fewest engine development tokens ahead of the new campaign - only seven of the 32 available - but managing director Cyril Abiteboul quickly moved to say he still expected to see a step forward in performance during the course of the season.
Technical focus: 2016 F1 power units
FEATURE: A long wait - France's 20-year win drought in F1
Keep up to date with all the F1 news via Facebook and Twitter
Lewis Hamilton put Mercedes on top of the timesheets for the second time in Last…
Full results from Free Practice 2 for the Las Vegas Grand Prix at Las Vegas,…
Charles Leclerc believes that Ferrari has a genuine “shot” at beating rival McLaren to Formula…
Haas team principal Ayao Komatsu has revealed that nine Formula 1 teams stand in opposition…
Lewis Hamilton and George Russell led the field in a chilly but trouble-free first practice…
Full results from Free Practice 1 for the Las Vegas Grand Prix in the United…