basically im thinking of booking a track day at castle combe for in the summer, but there is a noise restriction of 100db, at 4500 rpm, at 1/2 meter from exhaust.
my astra has a miltek cat back, and will have a de/pre-cat, and running regal stage 3 by then.
any idea's wheather i will be fine, is there a way to find out, as i will loose £50 if i turn up and fail the test .
anyone passed one of these tests, with a simular setup?
just i have no idea what 100db sounds like