Daniel Ricciardo says it was tough for him to feel any improvements with the Renault power unit during testing at Silverstone. Speaking ahead of the test, Renault's Remi Taffin said the engine manufacturer had “some interesting tweaks to trial” which could be introduced in Germany alongside the latest software updates. However, Ricciardo said after completing 72 laps of testing on Tuesday that he had not noticed a difference. “We're constantly trying to find more and we're not going to find tonnes of horsepower overnight,” Ricciardo said. “So all the improvements we get will be subtle and to be honest as a driver the subtle stuff is harder to feel but I think on the data it will...
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