They’ve just fitted the new 3″ version of the Whifbitz exhaust to my car, so its now 104db – just about track day/time attack friendly.
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Just to add, its 104db (according to Brands noise test) @ approx 5000 rpm, which for most is a higher rpm than normal (rev limit on mine is 8500) so it would be even lower.
Its definitely quieter driving on the road and cruises nicely at about 70-80mph.
and as I don’t have any soundproofing its more comfortable to drive without the helmet on!