mrchua

This is confusing...

But here is how I understand it, correct me if I'm wrong...

Levels of Loudness in Ascending order during Revs: (5 being the loudest)

1. Carrera - Non Sport - Non PSE
2. Carrera - Non Sport - PSE On
3. Carrera S - Sport On - Non PSE
4. Carrera S - Sport Off - PSE On
5. Carrera S - Sport On - PSE On

Mlbraptor

All I know is ; I love my PSE...

Cristophosphorus

When you say "Non Sport" or "Sport On/Off," are you referring to the Sport button on the center console? If so, from what I understand, the Sport button doesn't control the exhaust volume.

On 991s, the Sport button controls the sound symposer valve that allows more intake noise into the cabin. So, the only thing getting louder with the Sport button "ON" is the cabin noise. PSE's loudness doesn't change.

Of course, Sport does open the PSE valves automatically, so you'd have to close the valves if you want the car to remain quiet while enjoying the increased throttle sensitivity and mapping, etc.

thomnellie

You mean it doesn't? Whenever I start the damn thing cold, birds flock off, rabbits flee, small children run in terror and my neighbors get more irritable with me than usual.

LexVan

If you notice at cold start, when the car runs at high idle for about 45 seconds, the PSE button doesn't really change the exhaust note till it comes off that high idle.

mrchua

Im sure I read somewhere in this forum that its the other way around... The PSE button is the Sound Symposer. No added HP power, no added aggressiveness in revs etc.., it does produce louder sound though.

On the other hand, The Sport Button (on Carrera S models with Sport Exhaust w/o PSE), makes a louder exhaust sound and makes the throttle & revs more aggressive. I know this for a fact because my 991 is spec'd like this.

Cristophosphorus

It may be the case for non-PSE cars. But based on his post and my attempt to understand his question, it's definitely not the same for PSE-equipped cars.

On a PSE-equipped Carrera S, the PSE exhaust button only opens and closes the valves. The Sport/Sport Plus buttons change engine mapping, throttle sensitivity, shift points, and sound symposer settings.

I had no idea that non-PSE cars come with a "PSE" or exhaust button. Is that so?


Edit: Misread your original post regarding my last line above. The rest still stands, though!

Archimedes

On a non-PSE car, the sport button doesn't do anything whatsoever to the exhaust sound.

On a PSE car when you press the sport button, it also turns on the PSE button. Simple as that. The sport button itself has nothing to do with the exhaust.

And PSE is NOT the sound symposer. PSE relates to the exhaust itself and the valves inside the exhaust that open and close. The sound symposer is a diaphragm between the engine bay and the cabin. Two totally different things

jw1977

I'm confused, there is a sport exhaust system that's not PSE?

mrchua

What do you call the Exhaust (quad pipes) installed on the S models versus the squarish exhaust installed on the Base models?

Archimedes

No, there is PSE and the standard exhaust.

Archimedes

Those are just tips. The exhausts are different but both are non sport unless you have PSE.

mikeearly

That may be true but to my ear, and many of my friends, we can hear a difference in the car from inside and outside the car when the sport button is pushed. And you don't have to announce you are pressing the button - so it is not a "oh it must have changed" reaction.

That was true on my 981 Boxster S and is true on my 991 Carrera S.

Maybe it is engine "music" and not a true decibel sound level increase but it is different.

larspronne

ageee, my 2S w PSE gets louder when pressing the Sport button too. independent from the PSE button.

oalvarez

Why do a search!?!

What's even better are the countless responses that are the same as the first one!

Good grief.