I doubt he has posted much on the subject
as all it will do is create controversy.
I will admit to talking to him while he was doing these tests ... he was looking for the best combination for a friend's car that would be both road and track. And he was expecting to find a brand he could recommend. His tests disqualified droning exhausts as they had to be driveable. He was surprised at the results of his tests as, of course, they contradicted all the advertising claims.
Your ears only have so many vibrations built into them .....
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