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1. Yes, all it does is change the sound. I presume your question
really is: does it enhance performance? Porsche says no.
Does it enhance your perception of performance? I say yes.
Objectively then, no performance gains.
Subjectively, who cares? The sound makes it seem faster.
2. Is the video accurate? Well, it's youtube. The car is stationary.
And the guy is just blipping the throttle.
So within those parameters you can get an idea of its sound.
The real music, however, starts at 3 - 4,000 rpm and gets
better after that. And that's pretty hard to record and post.
Is there a switch? Yes. Absent the Sport Chrono (SC) option, you will
get a separate switch. With SC, it's built in to that function and
comes on only with the SC.
In either case, the DME controls the operation of the valves,
making it quiet from 10 to about 45 mph. I think there are more
parameters it uses than just speed, but I found it very annoying
and since we don't need to follow Euro noise regulations, I just
have it in loud mode all the time.
I would like to add a switch that bypasses the DME, but in a
Boxster, that's easier said than done. Electrically it's simple,
physically, well, that's another matter.
I hope that helps.
Best,
- Mark
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