Mercedes have revealed they will test "a prototype solution" to increase exhaust noise at next week's two day test at the Circuit de Catalunya.The dramatic difference between the high-pitched scream of the V8 engines used last year and the deeper sound of the new V6 hybrid units has attracted criticism from some fans as well as F1 supremo Bernie Ecclestone. Following the season opening Australian GP, Ecclestone told The Age newspaper that "I was not horrified by the noise, I was horrified by the lack of it", although he admitted to Sky Sports F1's Ted Kravitz in Malaysia that it was not as bad as he had feared. World Champion Sebastian Vettel was another vocal critic as...
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