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Old 10-04-2013, 06:01 PM
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apex+
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Default sport exhaust enhancements

I was told that the new Porsche 991 with sports exhaust is enhanced through the stereo to make it sound louder and more full. Any of you know if you can turn that off in setup to get rid of sound enhancement?

Thanks!

Chuck

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Old 10-04-2013, 06:25 PM
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Reborn996
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Might be the sound symposer you are hearing about... not related to the actual sound system.

http://www.caranddriver.com/features...ined-tech-dept
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Old 10-04-2013, 06:28 PM
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I stuffed some foam insulation in and over my sound symposer tube to tame it down a little.
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Old 10-04-2013, 06:33 PM
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Originally Posted by apex+ View Post
I was told that the new Porsche 991 with sports exhaust is enhanced through the stereo to make it sound louder and more full. Any of you know if you can turn that off in setup to get rid of sound enhancement?

Thanks!

Chuck

It's my understanding that BMW has the stereo enhancement. On the 991 there is a pipe with a sound diaphragm that conducts the actual sound from the engine's air intakes into the cabin. It's activated with Sport or Sport+

I have found that the best enhancements are, in increasing order:

Highway overpasses
Enclosed parking lots
Tunnels

PSE on, windows down, sunroof open, downshift to 2nd gear, let up on throttle - boom.
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Old 10-04-2013, 06:35 PM
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to the best of your knowledge then, it's not connected with the stereo system in any way. Thanks for the two bits of information. Very helpful! Chuck
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Old 10-04-2013, 06:48 PM
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Originally Posted by rnl View Post
It's my understanding that BMW has the stereo enhancement. On the 991 there is a pipe with a sound diaphragm that conducts the actual sound from the engine's air intakes into the cabin. It's activated with Sport or Sport+

I have found that the best enhancements are, in increasing order:

Highway overpasses
Enclosed parking lots
Tunnels

PSE on, windows down, sunroof open, downshift to 2nd gear, let up on throttle - boom.
Originally Posted by Reborn996 View Post
Might be the sound symposer you are hearing about... not related to the actual sound system.

http://www.caranddriver.com/features...ined-tech-dept
Thanks very much!
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Old 10-04-2013, 07:25 PM
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Originally Posted by apex+ View Post
to the best of your knowledge then, it's not connected with the stereo system in any way.
No it is not !
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Old 10-04-2013, 07:35 PM
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Mine is related to the stereo: when I open the windows, put it in Sport to open the PSE, I turn off the stereo.
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Old 10-04-2013, 08:39 PM
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Originally Posted by rnl View Post
It's my understanding that BMW has the stereo enhancement. On the 991 there is a pipe with a sound diaphragm that conducts the actual sound from the engine's air intakes into the cabin. It's activated with Sport or Sport+

I have found that the best enhancements are, in increasing order:

Highway overpasses
Enclosed parking lots
Tunnels

PSE on, windows down, sunroof open, downshift to 2nd gear, let up on throttle - boom.
It seems like the sound symposer diaphragm thing is turned on in regular (non-sport) mode as well if you accelerate hard - or am I hallucinating?
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Old 10-04-2013, 08:41 PM
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Originally Posted by mtony View Post
I stuffed some foam insulation in and over my sound symposer tube to tame it down a little.
I'd like to do the same. Where is that thing located and how do I get to it?
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Old 10-04-2013, 08:57 PM
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Originally Posted by SkandoSchwabe View Post
I'd like to do the same. Where is that thing located and how do I get to it?
It's located under the rear deck. If I remember correctly the deck just comes out with a pull. You will then see a strip of insulation lengthwise under the deck. Pull the insulation out and you will see a small round opening. That's the end of the symposer. I stuffed some insulation into the tube and added some more under the stock insulation under the deck.
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Old 10-05-2013, 12:41 AM
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Originally Posted by mtony View Post
It's located under the rear deck. If I remember correctly the deck just comes out with a pull. You will then see a strip of insulation lengthwise under the deck. Pull the insulation out and you will see a small round opening. That's the end of the symposer. I stuffed some insulation into the tube and added some more under the stock insulation under the deck.

Speaking of which, for those who want more engine sound, is there a way to get more sound into the cabin somehow from the symposer ? (Removing any insulation) ?
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Old 10-05-2013, 01:09 AM
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Originally Posted by lbahoshy View Post

Speaking of which, for those who want more engine sound, is there a way to get more sound into the cabin somehow from the symposer ? (Removing any insulation) ?
Rev it more
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Old 10-05-2013, 01:09 AM
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Originally Posted by mtony View Post
I stuffed some foam insulation in and over my sound symposer tube to tame it down a little.
Why do you have pse?
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Old 10-05-2013, 02:49 AM
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Originally Posted by rnl View Post
It's my understanding that BMW has the stereo enhancement. On the 991 there is a pipe with a sound diaphragm that conducts the actual sound from the engine's air intakes into the cabin. It's activated with Sport or Sport+
Does this include a 991 C2 with no PSE? Does a C2 with the regular exhaust still have a sound symposer activated with Sport ? I dont have Sports Chrono.
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