Red Bull gets 11th-hour diffuser boost

Red Bull Racing has been handed a late boost in its hopes of minimising the performance loss caused by the ban on the off-throttle use of blown diffusers, after the FIA agreed to an 11th-hour concession on how it uses its Renault power unit. Amid ongoing discussions between engine manufacturers and the governing body about how much teams are allowed to continue blowing their exhausts, Red Bull Racing's supplier Renault has been allowed to keep 50 per cent of its exhaust flow when the driver is off throttle because of reliability reasons. The original intention had been to limit teams to just 10 per cent - but that was then increased marginally to 20 per cent at 18,000rpm after preliminary discussions with teams.

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