Red Bull Racing's technical chief Adrian Newey says that Renault has made good progress with its 2017 power unit, although he stressed that as always everything depends on what rivals have done over the winter. Newey believes that engine performance will be a key factor in 2017 as high downforce increases the amount of time drivers spend on full throttle. "It certainly means power is more important because we all have so much grip, then the percentage full throttle per lap goes up," he said at the Autosport International show. "So the amount of time that you're actually grip limited as opposed to power limited is less. "I think Renault are definitely going in a very good...
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