The engines can't be made louder without making major changes to the regulations, the way the power unit operates and the exhaust layout, according to Renault's Remi Taffin. It's been reported that Bernie Ecclestone has asked the three engine manufacturers to advise on the best way of 'turning the volume up' for 2015, but Taffin says it's impossible to do, without widescale changes. 'There's two big items that drive [noise],' he told Autosport. 'Firstly revs: we went from 18,000 to something like 12,000 this year. 'It's important to say it's based on the regulations, because they set 15,000 as a maximum, but the fuel flow limitation means the maximum we're running, whether it's a...
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