In his latest technical video CRAIG SCARBOROUGH explains F1's new exhaust rule, a new aspect to Mercedes' front wing and how sparks have made an aesthetically-pleasing return this year

Formula 1's push to make its latest-generation engines louder has stepped up a gear with the FIA approving rule changes around the cars' exhaust systems.

Since the introduction of the new power units for 2014, the noise of the cars has been a significant talking point among fans.

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