bluelines:

With muted I don't mean quiet indecision It is, in comparison with the connector off, a muted sound at this RPM / speed. On the 997.1 I found this behavior very irritating. Just when the exhaust was about to go baaaah... the flaps closed. On the 997.2 it is not as distinct since the exhaust is overall quieter than the 997.1.

But why would the flaps be designed to close at this rev range? Is it because in 2nd gear the road speed corresponds to a level that noise drive-by regulations prohibit a louder sound?

I suppose that doing 4000-5000rpm in 4th gear and hence a high road speed, would keep the flaps open. What have you found out?


--

"Form follows function"