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987 Forum Discussion about the Cayman/Boxster variants (2004-2012)

Disabling the sport exhaust button

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Old Dec 24, 2014 | 04:29 PM
  #1  
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Default Disabling the sport exhaust button

I am tired of hitting the button "on" to make the car's sport exhaust louder. On my 911 all I had to do was pull a plug - but that was many years ago. I looked for a fuse to pull and nothing was labeled.

Thanks for the help!

Karl
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Old Dec 25, 2014 | 03:07 AM
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Nice to read such post here.
Well done.
Having a car (or a bike) that makes a lot of noise is like a baby that needs to make a lot of noise to attire attention. A normally grown boy (it is still quite rare !) should evolve and do not need to do so..
I always felt that noise is a polution, and those that need to have a noisy car/bike should spend some sessions with a good shrink in order to reduce their need to polute the others with their noise, ..and generate more hate against sport cars and sport bikes.
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Old Dec 25, 2014 | 08:42 AM
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My home track has a sound check and with the exhaust "open" its way under the minimal dba compliance. I am not looking for the sound of a Harley with pipes or after market install. Thanks for nothing. I did not put out the post to ask how you feel. Now go get a Tesla and save the planet.
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Old Dec 25, 2014 | 10:57 AM
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Texas, you must have been naughty this year.... That sure sounded like a lump of coal! Merry Christmas. Enjoy your ride however you like!
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Old Dec 25, 2014 | 11:37 AM
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That’s the kind of crap you would expect on another forum. It’s a passive aggressive way of saying "I have no idea". I eventually found the "how to" answer.

Last edited by texasviany; Dec 25, 2014 at 11:38 AM. Reason: grammer
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Old Dec 25, 2014 | 11:41 AM
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Is it like the 997 gt3, where you unplug in the engine compartment?
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Old Dec 25, 2014 | 12:07 PM
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Originally Posted by texasviany
That’s the kind of crap you would expect on another forum. It’s a passive aggressive way of saying "I have no idea". I eventually found the "how to" answer.
+1

Part of why we spend godforsaken amounts of money on these cars is the experience delivered when driving. That experience includes a lot of different sensory inputs, including auditory. I am in your camp and find the car much more enjoyable to me when I hear it making great noises.

There should be a connector somewhere in the engine compartment which can be pulled to open the circuit from the ECU that calls for the exhaust valves to close. It was really easy to access on the 996/997s, but I am not sure how easy it is to get to in the Boxster. This will also get you a nicer noise in the 30mph range as even with the PSE in sport mode the valves close. This IIRC is due to needing to pass Euro urban drive-by noise testing.
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Old Dec 25, 2014 | 12:40 PM
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Back to the original question... When I start my Spyder up, it sounds like the PSE is 'on' for a moment (to facilitate better air-flow?) and then it shuts off. I too feel it should default to the on position, with the PSE button then more like a 'mute' button.

I've thought to reverse the polarities of the switch, either at the dash or at the muffler itself, thus leaving the PSE on as the default. I've seen no wiring etc... Sounds like a weekend project.
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Old Dec 25, 2014 | 01:05 PM
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Originally Posted by Zeus993
Back to the original question... When I start my Spyder up, it sounds like the PSE is 'on' for a moment (to facilitate better air-flow?) and then it shuts off. I too feel it should default to the on position, with the PSE button then more like a 'mute' button.

I've thought to reverse the polarities of the switch, either at the dash or at the muffler itself, thus leaving the PSE on as the default. I've seen no wiring etc... Sounds like a weekend project.
IIRC (and I strongly suggest you talk to a Porsche tech to confirm as I was playing around with the system for my 997s in 07 and 09):
- the exhaust valve itself is controlled via a vacuum line that originates at an electronically controlled junction on the intake manifold somewhere
- the junction operation is controlled electronically via the ECU (or in other words the ECU tells the junction when it should either open or close to send vacuum to the valve)
- the best way to disable the system is to pull the connector at the junction on the manifold as this will force the system to be "on" all the time, regardless of the ECU signal to the junction
- i don't think reversing the switch will do anything other than cause you a polarity problem with the switch itself

Again - talk to someone knowledgeable about the latest generation of this system as it may have changed since I played with it.

Hope you get it working!
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Old Dec 25, 2014 | 05:17 PM
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Originally Posted by Zeus993
Back to the original question... When I start my Spyder up, it sounds like the PSE is 'on' for a moment (to facilitate better air-flow?) and then it shuts off. I too feel it should default to the on position, with the PSE button then more like a 'mute' button.

I've thought to reverse the polarities of the switch, either at the dash or at the muffler itself, thus leaving the PSE on as the default. I've seen no wiring etc... Sounds like a weekend project.
I agree. I also notice that it's louder at start and then quiets down until I depress the button.
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Old Dec 25, 2014 | 06:15 PM
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WTF?!* over

Originally Posted by GVA-SFO
Nice to read such post here.
Well done.
Having a car (or a bike) that makes a lot of noise is like a baby that needs to make a lot of noise to attire attention. A normally grown boy (it is still quite rare !) should evolve and do not need to do so..
I always felt that noise is a polution, and those that need to have a noisy car/bike should spend some sessions with a good shrink in order to reduce their need to polute the others with their noise, ..and generate more hate against sport cars and sport bikes.
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Old Dec 25, 2014 | 09:36 PM
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Originally Posted by JSF101
WTF?!* over
www.priuschat.com
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Old Dec 25, 2014 | 10:53 PM
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I see, noisy here, ..and very polite.
Real sport attiitude, right ?

Fyi, no Prius, nor any Tesla, but currently only own 3 P cars.
And, Im a fan of motorsport, with good track activity, ..but, no need to make noise.
i did not understood that this topic was for the kind of the F guys (ferrari, to be accurate and polite) that installs tubi, and when they ride their car, they wear earplugs.
Now, if you feel that "this" is the best part of motorsport, thanks, ok, I would simply (and politely) say: sorry to have disturbed you with my post, please ignore it.
Bye.
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Old Dec 26, 2014 | 12:02 AM
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The holidays seem to make certain people grumpy...
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Old Dec 26, 2014 | 11:06 AM
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When you start the engine, the vacuum builds up and the valves are pulled shut.
Hence why the exhaust is loud on start up and then goes to quiet.

You can pull the connector from the PSE valve so the valves stay open all the time.
But then you risk that over time, the valves in the exhaust get blocked in the open position.

We sell this PSE controller which is a plug and play unit that allows you to switch the PSE in your Boxster between loud and silent at any time and this by remote control.
No need for pulling wires to the irnterior , drilling or cutting wires.

Here is a link to a Youtube video that shows how to install it in a Cayman:
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