When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I had pse on c2s and it was decent.. I've chanted to soul valve exhaust and ifs night and day.. if u want the sports exhaust, i have them still if u wsnt throw me an offer
I would strongly suggest you consider Aftermarket Sport cats in stead of PSE.
You have a C2S, which means you have sport exhaust at high RPMs (PSE only adds open valves at low RPMs) but adding Sport Headers will give you usable and noticeable low down Tq and HP
You have a C2S, which means you have sport exhaust at high RPMs (PSE only adds open valves at low RPMs) but adding Sport Headers will give you usable and noticeable low down Tq and HP
This is very interesting. I just got a 991.1 c2s and it sounds fantastic at higher rpm’s. Is there any technical description that speaks to the difference you are talking about (c2s vs base vs pse exhaust)? I’d love to learn more about how this works.
I had pse on c2s and it was decent.. I've chanted to soul valve exhaust and ifs night and day.. if u want the sports exhaust, i have them still if u wsnt throw me an offer
I might be interested in your PSE system… I’m new to board and Porsche community. Just bought my 2012 991.1 C2S… has everything except PSE. I have a great warranty to maintain, so need to keep it OEM.
I had pse on c2s and it was decent.. I've chanted to soul valve exhaust and ifs night and day.. if u want the sports exhaust, i have them still if u wsnt throw me an offer
So you have the original PSE with button? How old are they? Any pics?
You do not need the side mufflers or tips as they are 100% the same. To upgrade you need only the center muffler, interior button and some other bits. For me I picked one up in flea bay for $600. All in including all necessary parts and installation by my buddy was 1500 plus a 6 pack.
PSE is 100% worth it and transforms the car. Another upgrade is to weld in 200 cell cats and spacers etc etc but that is a rabbit hole with warning lights etc. I will probably weld in the cats at some point
This is very interesting. I just got a 991.1 c2s and it sounds fantastic at higher rpm’s. Is there any technical description that speaks to the difference you are talking about (c2s vs base vs pse exhaust)? I’d love to learn more about how this works.
C2S or C4S regardless of PSE optioned or not has an exhaust valve with requisite vacuum tubing and extra change-over valve. A Base C2 or C4 doesn’t have the vacuum and change-over valve, unless it is optioned with PSE.
In a non-PSE C2/4S, the software is programmed to open the exhaust valve above 3500 rpm. Thus, the exhaust only flows through the center muffler and skips the side mufflers completely. The center muffler in a non-PSE C2/4S car is slightly more quiet than a PSE C2/4S car. The side mufflers are the same.
In a PSE C2/4S, the PSE button opens the valve at all RPMs, even below 3500. However, regardless of button on or off, the valve will always be open above 3500 rpm. This is a problem to some who want to drive in higher rev ranges without the noise (a sound restricted track or a stealthy but quick getaway).
With Soul, you can replace the center muffler, whether PSE or not, with just valved tubing (no muffler). The Soul exhaust valve can be connected to the stock change-over valve to work with a newly programmed button for non-PSE cars, or left as is for PSE cars. Alternatively, you can control the valve with Soul’s electronic servo, which has the benefit of remaining closed above 3500 rpm when choosing to drive with exhaust valve closed. I ran the Soul tubing with a stock change-over valve and new PSE button console programmed to work. The sound was GLORIOUS!
hello I was wondering why with part number 991-111-437-07 im seeing both of these front parts. i have a 2015 c4s without pse but am looking to add it. i am wondering if either style has benefits over the other. I am in NY and it seems the 2 paer style is more in the European market. thanks in advance
Your top picture is for a standard non PSE 911/s exhaust center muffler and the bottom one is the 911 PSE Sport exhaust center muffler. You can order the standard exhaust with 2 twin tips or with 2 big single round tips. PSE always comes with twin tips. Part numbers for tips and systems are different. Main difference is the PSE comes with a button in your console to turn on/off loud under 3700 rpm. Both open after 3700 rpm. Both open at startup/warmup idle then close after about a minute or so. And technically when i say "open" in reality the actual valve is in the closed position. by default the actual valve is always in the open position and vacuum closes them to the side mufflers and make it louder. Via the console button or RPM. "Open" valves at startup/warmup idle is achieved by Porsche magic and not RPM. It took me a bit of time to understand when people talk about "Open" Valve its really the valve in the closed position blocking the side muffs. its important to understand if you are testing for a vacuum leak a bad COV or figuring out what the button is really doing during install and retro fit.
991-111-331-07 standard center muff 991-111-437-07 PSE center muff 991-044-200-06 PSE system
10-25-2022, 08:03 PM
Adding PSE to 991.1 CS2
