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On mine there is a distinct difference on vs off - Something must not be right - did you download the PDF I had somewhere with the instructions for the service tech. When I had mine done they walked step by step and it worked fine.
I had my 992 Targa 4S (without PSE) done a few months back, I posted on it. Based on my previous 992 C4S coupe with PSE that I just traded in, when I got the targa - I would say it is about 80% as loud as my 992 with PSE.
I do have a question for you. My dealer programmed the 1st "favorite" toggle switch to activate the PSE (as well as it does it automatically when in sport/sports+).. But I cannot program my 2nd position toggle switch - if I hit it, it just says need to program it. But cannot on the PCM screen. Is this the case for you?
I can however program the steering wheel favorite with no issue.
I have the same problem with my second shortcut button... Did you figure it out?
I have the same problem with my second shortcut button... Did you figure it out?
Purchased my 23 C4S w/out PSE as I don’t care for the oval exhaust. I decided to try activating the PSE via PIWIS and was successful in hearing a mild difference as well as being able to now activate via toggle switch (1st diamond) or Chrono **** on steering wheel (sport/sport plus). Unfortunately, I lost functionality of the 2nd Diamond.
Turns out there is a different switch assy to use with PSE that has the exhaust logo in position two. I ordered the assy from a company that had one in England for $100 USD (excluding shipping). Switch assy R&R was not difficult at all but did require removal of panel on passenger side of dash along with the long piece of trim and cup holder.
I also found a PSE muffler ($1000) on eBay and decided to go with a PSE muffler as well.
Bumper removal and muffler install were easy as was the swap of the 2 valves on the muffler.
Programed the new switch assy with PIWIS and everything works as intended. No impact with PSE muffler exhausting on to/through Non-PSE exhaust pipes. 🤗
Turns out there is a different switch assy to use with PSE that has the exhaust logo in position two. I ordered the assy from a company that had one in England for $100 USD (excluding shipping).
Any chance you can share the part number or vendor?
Originally Posted by Schwarz992C4S
Programed the new switch assy with PIWIS and everything works as intended.
Do you think the same would have been true had you not installed the PSE muffler, too? Is, did you see anything different between the PSE and non-PSE mufflers that might affect how the valves interface with the switches, coding, or PCM?
Thanks for sharing your experience and information!!
Any chance you can share the part number or vendor?
Do you think the same would have been true had you not installed the PSE muffler, too? Is, did you see anything different between the PSE and non-PSE mufflers that might affect how the valves interface with the switches, coding, or PCM?
Thanks for sharing your experience and information!!
The PN installed was 992-941-209-CJ-TER (Center Console Switch Unit) I just checked locally and it’s new here in the US for ~$574. Mine was much less but probably an opened package or installated item (probably returned). Check with the salvage yards and make sure you can return.
I had the same outcome as you with a switch assy with 2 diamonds. I did the software activation without the new switch first and could easily tell the difference. Drive like that for a few days and the loss of the diamond function agitated my OCD side so I replaced the switch (still had non PSE muffler installed). Worked perfectly but then I saw the PSE muffler available and said what the hell…Seller was willing to take a return if there was interference with the quad tips vs the oval tips.
There was no need to recode for the muffler as the valve motors were swapped and there is no difference in valve operation/part number between PSE muffler and non-PSE muffler. Electrically, it’s the same on both. The sound tone is lower, and louder with the PSE muffler and the larger of the two exhaust openings on each side are slightly larger with the PSE muffler.
I could have gone a different path but only wanted OEM design and functionality while retaining the quad tips.
Worked perfectly but then I saw the PSE muffler available and said what the hell…Seller was willing to take a return if there was interference with the quad tips vs the oval tips.
I could have gone a different path but only wanted OEM design and functionality while retaining the quad tips.
Thanks for posting about your experiences. Very informative! With respect to the PSE vs non-PSE muffler, do they have the same spacing where the muffler pipes face the exhaust tips? I too much prefer the quad tips over the ovals and I have stock PSE. I was wondering if I can just change the rear exhaust openings and the oval tips to quad tips and it would clear my stock PSE muffler. Appreciate any insight you can give on this. Thanks.
>> as a standalone offering without the stage 1? I would be interested
Some ppl here call it ‘Stage 0’: change PSE, cold start, auto-stop and other behaviors without changing engine performance. Same price though. IMHO if the only thing you want to change is valve behavior then it’s cheaper to get the just the Cargraphic controller, but M is awesome if you have other needs.
Purchased my 23 C4S w/out PSE as I don’t care for the oval exhaust. I decided to try activating the PSE via PIWIS and was successful in hearing a mild difference as well as being able to now activate via toggle switch (1st diamond) or Chrono **** on steering wheel (sport/sport plus). Unfortunately, I lost functionality of the 2nd Diamond.
Turns out there is a different switch assy to use with PSE that has the exhaust logo in position two. I ordered the assy from a company that had one in England for $100 USD (excluding shipping). Switch assy R&R was not difficult at all but did require removal of panel on passenger side of dash along with the long piece of trim and cup holder.
I also found a PSE muffler ($1000) on eBay and decided to go with a PSE muffler as well.
Bumper removal and muffler install were easy as was the swap of the 2 valves on the muffler.
Programed the new switch assy with PIWIS and everything works as intended. No impact with PSE muffler exhausting on to/through Non-PSE exhaust pipes. 🤗
Awesome, thanks for the explanation! What did you have to recode again, exactly, to get the new exhaust switch to work? My dealer does my coding and I want to know what to tell them to code if I retrofit the exhaust switch.
are your tunes available at dealers (i.e. champion motorsports)? or are they only available through m engineering directly. asking because of factory warranty concerns. TY.
are your tunes available at dealers (i.e. champion motorsports)? or are they only available through m engineering directly. asking because of factory warranty concerns. TY.
Yes, we tune almost all of Champion's cars. They are down the street from us actually.
We also just released M-Coder which allows you to do the PSE valve mod, and other features, while retaining Stage 0 power. The PSE valve mod can be applied to cars that have PSE already equipped, or cars that haven't been coded for it. Just go to "sport" mode and the valves will open up.
-Charles@M
Last edited by M Engineering; 01-24-2024 at 06:14 PM.
Thank you....my car does NOT have PSE nor Sport Chrono. I am interested in the Valve mod..
Wondering if any of the tunes increase the rpm on launch, or add launch control? I don't have "launch control" due to lack of Sports Plus....the so called "Soft Launch "(although i have only tried it once) has a lower RPM threshold than the launch control on 992's with sports chrono.
also, Do you have a sales rep at champion motorsports that you recommend? My understanding is that mods done with them dont f up the warranty. (note: my car is from champion).
03-19-2023, 09:11 AM
