Goodwood are very “by the book” on Noise Checks. 98db is nothing to a side-piped car even with a full stack of mufflers.

You can check with your own meter in advance but the only one that counts is the one in their hands on the day. I’ve been and seen people disappointed by this. Handily there is a garage on site with a stack of bolt on noise suppressors, though their design only backs up the exhaust gasses and really heats up the exhaust.

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