Friday analysis – tight at the top (for now at least)

Many fans hope the tweaks to the engine mapping regulations this weekend could mean a tougher fight for Red Bull in qualifying. Friday afternoon’s times in Valencia suggested that they may just get their wish, though the fact that Sebastian Vettel ran a completely different programme in the morning (a post-off throttle blown diffuser ban set-up in preparation for Silverstone was the most popular rumour) would suggest the world champions are not too worried just yet. We take a team-by-team look at early progress in Spain

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