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Discussion Starter #1 (Edited)
Diving into the weeds a bit here, but trying to understand all the options on my GTS. Is my understanding of this system correct?

By changing the driving mode (Sport Chrono) from Normal to Sport/+ is this simply raising the idle speed of the engine and opening the valve on the right side of the PSE? It almost sounds as if there's a secondary valve somewhere in the system that is only controlled via the Sport Mode settings.

For example, the car gets noticeably louder when in Sport mode (both with PSE dis/enabled) then if I were to rev match the same RPM in normal mode.

There seems to be a lack of information about this system out there which is maddening. I really want to know what is happening at the system level.
 

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The throttle mapping in Sport/+ is much more aggressive.
It's more than just raising idle spreed.
"normal' is more of an economy setting.

If you activate PSE valve manually with the console button, "normal" is definitely quieter than "sport"
 

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The thing is that Sport+ does sound like Normal since no extra fuel is used to make sound louder or add garble/backfire.
So try be in Sport+ and turn the Pse on/off and you will hear it is as "tame" as in normal mode.
 

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Discussion Starter #4
Thank you both for your responses.

So to clarify, the driving mode simply runs the engine with different programming; and the PSE being enabled then opens/modulates the valve on the exhaust?
 

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Have you disconnected the fake Soundaktor? I noticed a difference in sound that was not exhaust related when in Sport mode. The sound was being amplified and I noticed it only in that one mode (Sport) and it was coming from the firewall behind the seats.
 

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Have you disconnected the fake Soundaktor? I noticed a difference in sound that was not exhaust related when in Sport mode. The sound was being amplified and I noticed it only in that one mode (Sport) and it was coming from the firewall behind the seats.
According to Porsche the "optimized engine sound in the passanger compartment" are engaged in sport and sport+, my ears says it is always active.
But then there is two different models of the aktor, the newer one are not as agressive if i have understand it right.
 

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Discussion Starter #8
Have you disconnected the fake Soundaktor? I noticed a difference in sound that was not exhaust related when in Sport mode. The sound was being amplified and I noticed it only in that one mode (Sport) and it was coming from the firewall behind the seats.
Funny that you mention that.. is there any information out there on how to do this? :)

I was getting the same impression in sport mode, (especially with the windows closed) that I was hearing a lot of noise that didn't seem "genuine."
 

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Discussion Starter #9
According to Porsche the "optimized engine sound in the passanger compartment" are engaged in sport and sport+, my ears says it is always active.
But then there is two different models of the aktor, the newer one are not as agressive if i have understand it right.
I am currently looking into disconnecting the aktor. I had another sports car years ago that had something similar and it drove the purist in me mad. Any documentation out there on how to do that?

Tack!
 

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I am currently looking into disconnecting the aktor. I had another sports car years ago that had something similar and it drove the purist in me mad. Any documentation out there on how to do that?

Tack!
right rear of your trunk, pull the removable panel to expose the fuse block. Pull the 7.5 fuse (you might need needle nose pliers and or the fuse puller that is in the other fuse panel). JOB COMPLETE!
25540
 

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Discussion Starter #12
right rear of your trunk, pull the removable panel to expose the fuse block. Pull the 7.5 fuse (you might need needle nose pliers and or the fuse puller that is in the other fuse panel). JOB COMPLETE!
View attachment 25540
Took me a few days to find the time but project complete - what a difference that made! The cabin audio environment with the windows up now sounds SO much better. Thanks!!
 
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