Has anyone added and X pipe to a 991 S PSE car? if so what does it do?

 

I have. Makes it louder! Sounds great. FVD exhaust. Removes the center muffler.

 

You'll also lose use of the exhaust sound option button.

 

Not necessarily so...

The FVD setup I have has valves and is controllable via the factory button!

 

"Adding" an x-pipe to PSE means that you delete the center muffler section. But, as mentioned above, the x-pipe must have valves to retain PSE's on/off feature.

FVD, Cargraphic, AWE, and other companies sell "x-pipes" that have integrated valves designed to work with PSE.

I just installed an AWE SwitchPath system on my PSE GTS. The result? A ridiculously loud car.

 

This is excellent news for me as I always thought otherwise. I'm going to have to take a closer look as I'd like this on my ride. Thanks!

 

^^^They sound great!!!!!

 

^^^^See the above posts. Some X pipes have valves that let you retain the use of the factory button.

 

I see you followed the same route with AWE Xpipe so how do you like it vs Cargraphic?

 

It's a great exhaust. I'm planning on doing a mini-thread to highlight the differences, so stay tuned. It's definitely not the same as the Cargraphic!

 

Which one do you guys think sounds/performs better:
PSE + x-pipe or PSE+sportheader/sport cats (fabspeed)?

 

I've only tried PSE + Xpipe on my 991 GTS and my 997 S. It sounds really fantastic above 5000 rpms! Sport cats need a serious assessment as not all of them will make power and you might loose your Porsche warranty. Personally I will stick to Xpipe (less risky for a great sound) unless you hear and Dyno test the sport cats before.

 

I had Fabspeed sport headers on my GTS. Dynoed them and they did nothing. They are being exchanged for some 'GTS-specific' ones with larger cats so we shall see.

They sounded great with PSE though: bit more presence than stock but with all the nice tone the stock setup has. Also a lovely mournful wail as revs went up. I have never heard an X-pipe setup but imagine it would be too loud for my taste, and I'd worry about drone. None of that with the FS headers.

 

With the Xpipe as much drone as stock now my GTS sounds like a "race car" when above 5000 rpms or downshifting and as soon as I close the valves and drive gently it's as loud as stock but with deeper and throatier tone.

 

Just a note for clarification:

Installing an x-pipe on a PSE-equipped car essentially gets rid of the main PSE mid-muffler that you paid for. So, an x-pipe drastically modifies PSE and almost gets rid of the factory part itself. The car will have a much louder exhaust note.

On the other hand, installing headers means that you retain the PSE mid-muffler. This means that the exhaust note may slightly change, but it will not be dramatic since the exhaust still must travel through the stock PSE mufflers.