scm wrote: ↑Sun Aug 29, 2021 10:15 amBehaviour, as noted in many previous posts, depends on the MY. In my MY18 the loud start certainly doesn't diminish after "couple of seconds" - it takes around a minute for mine to quieten down from cold. Also, pressing the active exhaust button doesn't give a noticeable deeperr/louder tone - that doesn't happen until about 1500 rpm. Switching to dynamic does produce that effect, though.DaddyDarren wrote: ↑Sun Aug 29, 2021 9:39 am Best way to check valve operation is from cold start. Initial start should be loud, couple of seconds, followed by noticeable decrease in volume as valves close. Few seconds later press ‘loud’ button & should be noticeable deeper/louder tone.
Appreciate you putting me right