Porsche Sports Exhaust PSE is quiet or coolant light on? DIY fix 981, 991, 718, 997, 987, GT4 GT3

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Porsche Sports Exhaust PSE is quiet or coolant light on? DIY fix 981, 991, 718, 997, 987, GT4 GT3

Рет қаралды 28,085

4 жыл бұрын

Is your Porsche Sports Exhaust PSE as loud as you remember, or maybe you had a coolant warning light recently? if there is no sign of coolant leak then you need to watch this video!
In this episode of the Porsche maintenance series, we explain how the PSE operates, what can go wrong with it and how to fix it.
Please leave comments if you have faced this issue on your Porsche, it is applicable to the 981, 911 - 997, 991, 718 and many more.
Thanks for watching
Useful links purchase links on Amazon: these links support the channel
Jack pads (UK link) - amzn.to/35YCL1r
Jack Pads (USA link) - amzn.to/2TLFzJA
Penetrant spray - amzn.to/3cf6zZy
High performance grease - amzn.to/3dCHMiv
Wire brush - amzn.to/3bfIvV3
Male Torx Set inc T30 - amzn.to/2VHBzvs
Female Torx Set inc E10 - amzn.to/2yUznaI
OR, Official part no. via Porsche - 7pp906270, oem Pierberg
In this episode I attempt to find out why my Porsche Sports Exhaust (PSE) has lost it's snap, crackle and pop. I also got a coolant warning a few weeks before. We go through how the PSE and vacuum system works and the potential areas to troubleshoot before visiting the OPC or specialist.
First we look at the exhaust valves and actuators to find out if they are seized before moving into the engine bay to explore the vacuum system and electrical components which control the system.
We then move onto the vacuum system, the vacuum system controls the movement of the valves and if there is a leak or the solenoid controlling the system fail the car can begin to throw coolant warning errors or the PSE valves will stop functioning even when pressing the exhaust button.
I'm only a keen enthusiast who enjoys a bit of problem solving, I am not a trained mechanic, this video was created for your information so use the video for guidance and do your own research or consult a professional if in doubt before proceeding.
Tools as used in this tutorial are available on Amazon, links in this video description might be affiliate links. If you purchase a product or service using one, I may receive a small commission at no additional cost to you. The revenue I earn from affiliate links helps to keep my channel in good order and is an easy way to show your support and help me make more videos like this.
Male Torx Set inc T30 - amzn.to/2VHBzvs
Female Torx Set inc E10 - amzn.to/2yUznaI
OR, Official part no. via Porsche - 7pp906270, oem Pierberg
Applicable to all Porsche cars with the PSE system;
Porsche 911 - 996, 997, 991, 991.2 GT3
Porsche Cayman / Boxster - 986, 987, 981, 718, GT4, GTS, Spyder, R
Join me while you are stuck at home, hope you enjoy. Please like and subscribe to support us.
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Video Editor - Hitfilm
Thanks for watching

Пікірлер: 213

@TDS981 3 жыл бұрын

Golden Rule: whenever you start it, drive it! I'm convinced that the reason these fail is due to the water generated at cold start, if the car isn't then driven very far it sits there and seizes the valve.

@AutoAmateur 4 жыл бұрын

Great approach, great thoughtful shots laced in throughout, great outcome! What a brilliant video! More please!! :)

@TDS981 4 жыл бұрын

Hey AA, feel slightly humbled that you watched it, thanks mate really appreciate that :)

@AutoAmateur 4 жыл бұрын

@@TDS981 too kind. Really really great video! Can't wait for the next one. Cheers!

@jasonwalsh9211 4 жыл бұрын

Thanks for creating and sharing this video... could save many owners a few quid on diagnostics at the stealers 👍👍

@TDS981 4 жыл бұрын

Thanks Jason, that was my thinking also, and I need to find things to do right now.

@IGCameron 4 жыл бұрын

Looking at Jeff Richardson's Video I see that the removal of the engine top cover is a lot more complicated on the 981/2 than the 986/7. Getting the hood to go forward to gain access to the engine cover is far easier on the 986/7. I never realised this before as I have never attempted it on my 981 and 718 cars. Your video is well done. I wish Jeff Richardson could get his vocal sound system as good as yours.

@TDS981 4 жыл бұрын

Planning to do a roof video as well since I have nothing better to do! It looks more difficult than it is.

@Motolimey 4 жыл бұрын

Love the intro shot! Many years since my last blast around Scotland, some great memories ;)

@TDS981 4 жыл бұрын

Thanks for watching, yes some cracking roads up here. 👍

@D992 4 жыл бұрын

Superb video. Well done! I have a 981 with PSE and I'd never have another Porsche without it :-). As a foot note, 6 of us were meant to be up your way last week for a 5 day tour. The virus put an end to that but we will be there one day. Cheers :-)

@TDS981 4 жыл бұрын

Thanks Dibbs, yes must have option for sure which was why I was so eager to get it working again. Everything has to be right for the day we can all get out and about again! Nice one you won't be disappointed and hopefully you get the weather for it, this past week would have been perfect sun every day and it makes a big difference.

@max99x 4 жыл бұрын

When lockdown is over, I'm also thinking of doing a road trip up to Scotland in my 981 CS , it's currently locked away in a Porsche garage as it was having some work done just before lockdown!

@TDS981 4 жыл бұрын

@max99x Recommend the west coast, take it that's where you were planning?

@bikrambakshi1170 10 ай бұрын

Thank you for this video. This helped me track down a cooling system fault on a 2018 Cayman GTS that has been hounding me for many weeks. I changed 2 change over valves (COVs) accessed from the engine cover in the trunk but couldn’t figure out why the problem persisted. Then I saw your video and checked the PSE valve. Quickly found out that I had no vacuum at all! Turns out one of the COVs deep inside the engine compartment (above the water pump) had both vacuum lines disconnected. Must have been by previous owner. I reconnected them and voila! Thanks again and keep up the good work.

@TDS981 10 ай бұрын

Thanks for sharing, i'm glad it was useful 👍

@ForgetfulFoot 4 ай бұрын

Hey mate. Could you access the COV above the waterpump via the top access hatch. Did you need to tackle it from underneath or from behind the seats?

@jonatk6764 2 жыл бұрын

I found the flaps in the exhaust were stuck, one fully open one only making half travel . Used copper slip and release spray and gradually freed the movement off . Took it nice and easy in the initial movements Working great again. First issue in 30k miles and 6 years of ownership

@TDS981 2 жыл бұрын

I'm glad you caught it in time and fixed it. Cold starts without driving are best avoided as moisture builds up and seizes them.

@sixpotshot 2 жыл бұрын

Amazing: most of the stuff you have published have failed on my car as well: jet washers, sports exhaust, (now) a front coil broken, the fan (which I have fixed but I don’t think you have published anything about it yet - a very easy fix as one needs to access it and give it a spin to bring it back to life). A pheasant hit (or the other way around…) my front right radiator grid (awaiting for a fix). It would be nice how to tighten up (or replace it with a new one) the soft top but I haven’t found a way to do it myself. I want to replace the PASM suspension myself plus the brakes but I have not been brave enough yet! All your tips are of great help, thank you for publisher them

@TDS981 2 жыл бұрын

Sounds like you are having a tough time,.I'm sorry to hear it! Thanks for the message and support it's appreciated. I did cover the fan in the maintenance video as it's quite common when the cars aren't being used. What's up with the soft top on yours?

@sixpotshot 2 жыл бұрын

@@TDS981 Apologies if I have missed the fan bit. It could well be that’s because I had already sorted that matter and my brain kinda overpassed that bit. Yeah there are a few bits that need to be done: I have had the car (981S manual) since new (in 2012) and it was my daily driver for some years so it has 110k miles on the clock and some wear. But there are good bits: believe it or not but the discs and the brake pads are still the original ones (I go sideways but only very occasionally and just in moderate doses as I am very careful with wear and tear items) - but I have to say breaking is not as it was nowadays and probably it needs a good check. The clutch and the shocks are still original as well. The shocks (PASM) need doing definitely but what I would like (KWs getting rid of PASM or Bilsteins keeping PASM) is too expensive. Another option would be to buy the 981 GTS shocks (with PASM from factory) but i am not sure if my car would have to be re-coded to recognise the new dampers… My short aim is to resolve the windscreen water jets (I’ll follow your advice), replace the front coils (I need a dose of bravery…) and fix the plastic grid on the front of the radiators (which were replaced once at one of the Porsche Centres at about 50k miles). Re the soft top this is a common thing as the all becomes slightly loose over time generating a very particular (low frequency) noise: the fabric / structure was once tightened at a Porsche dealer to good effect so long as one asks they will do it - I am just not sure what exactly they do. I did not replace my indicators but on the side ones I did install LED bulbs which I fitted as well to the front headlights without any CANbus error. The sports exhaust failed once when the car was new (replaced at no cost by Porsche) and for a long while now has been malfunctioning: I reckon every now and again something happens and comes to live but that is normally short lived to the point I was thinking soldering the thing on its open position! Overall it is the shocks that I most want doing as the car has always been a touch too soft for my taste. There are a few other things: I want the plenum that comes with the 82mm throttle body (rather that the artificially restricted 74mm to prevent the car to compete with the 991 Carrera 3.4…), a software tuning, a single flywheel and a short throw gearchange… I could do with a X-Pipe tip as well as these are not too expensive. But the iWant needs an iBudget and that will take time 😊

@Spaceear 2 жыл бұрын

Love your maintenance videos. Just had to free up one of my valves and came straight to your channel for instruction. WD40 did the trick with a bit of muscle. Not sure I would want to tackle the vacuum system though.

@TDS981 2 жыл бұрын

You caught it just in time 👍 make sure you don't cold start and park that's the cause

@tomburns890 4 ай бұрын

Gods video. Cheers

@NK-vq6by 4 жыл бұрын

Informative video. Be interested to see how very seized valves are freed up. Maybe also how to replace actuators if required.

@TDS981 4 жыл бұрын

A lot of penetrating oil, elbow grease and patience would be my guess, but as they say (current situation excluded) prevention is better than a cure. 😂

@acooper1037 Жыл бұрын

@@TDS981 on my Cayenne it was the actual valves that were sooted up, the only way to clean would be to take off and grit blast them.

@omega_shinden1844 4 жыл бұрын

Good video! I tested it, engine has to be warm, before PSE works . Guess I got used to the noise :-)

@TDS981 4 жыл бұрын

Thanks, yes good point, when the engine is cold the PSE button does nothing, usually takes about 1 minute to start working.

@alexandred5302 2 жыл бұрын

You should make a video about the sound symposer (difference, installation, parts, cost…) very nice ! We miss information about this mod

@TDS981 2 жыл бұрын

Thanks for your comment and suggestion. It's perhaps something I can put together over winter. If you've watched my engine access video you'll know I am in no rush to open it up again 😂

@matheujew 3 жыл бұрын

so mine went out while driving. i noticed it was generally louder and could make it quiet. the next day i could tell the switch wasnt working. haven't bought the part as ive only begun to trouble shoot today but this helped.. thanks

@TDS981 3 жыл бұрын

Any low coolant warnings they sometimes go hand and hand, also check the hoses are connected to the valves?

@johnycarrera 4 жыл бұрын

Great video, very informative thanks

@TDS981 4 жыл бұрын

Thanks John glad you enjoyed.

@stuartleiby9778 Жыл бұрын

Super helpful video, well done!

@ohmyggg Жыл бұрын

Do you have a video showing how you retrofit the GTS sound symposer into your S? Part #s, process, etc?

@TDS981 Жыл бұрын

No not at the moment. I do offer a service for remote support for retrofits, email if interested.

@lesliewoodcock5880 3 жыл бұрын

Great video. Thorough; step by step and detailed video. Thx.

@TDS981 3 жыл бұрын

Thanks 👍

@PrettyGreenMonk Жыл бұрын

Excellent video thanks

@TDS981 Жыл бұрын

No worries

@TheWasp550 4 жыл бұрын

Thx Dr. Porsche, good to know what to do / check from time to time 👍🏼

@TDS981 4 жыл бұрын

Drive with it off sometimes, yes I did just say that😂 but honestly it's good for it to operate in both positions rather than just on.

@TheWasp550 4 жыл бұрын

Test Drive Scotland Yes sir 😄👍🏼

@michaelrobinson5592 3 жыл бұрын

Very good video 👍

@TDS981 3 жыл бұрын

Thanks again 👍

@dougspeicherelevatemedia7384 3 жыл бұрын

Great vid!

@TDS981 3 жыл бұрын

Thanks Doug!

@nomansland4811 3 жыл бұрын

Very informative. Thank you.

@TDS981 3 жыл бұрын

Thank you for the feedback and comment, appreciate it 👍

@alienm2554 2 жыл бұрын

Great videos, thank you!

@TDS981 2 жыл бұрын

👍

@chrisflynn9361 2 жыл бұрын

. Very nice video................... GOOD JOB............. CONGRATS............................. / / / / / /

@TDS981 2 жыл бұрын

👍

@k.j.g.9601 2 жыл бұрын

Just subbed to your channel, really helpful videos. I don’t have a PSE and the fault code is saying cooling system issue. Where was your heating change over valve located?

@TDS981 2 жыл бұрын

Thanks for subscribing 👍 there are quite a few of these connected to your vacuum system, you'll need to access the top of the engine to find and test them (watch my other video) but if your heating is running cold then you'll know it's that one. I'd check out your coolant level first and the thermostat etc.

@Flies2FLL 3 жыл бұрын

Those of you who do not have PSE, do the Carnewal/Cantrell modification. You ship your Non-PSE muffler to them, they cut off the entry pipe, reach in and use a torch to cut a hole in the pipe inside the muffler, and then weld it all back together with an added support. The resulting box looks extremely stock and still has the original Porsche part numbers. Yet it sounds about the same as PSE, though obviously full time. Total cost with shipping and local installation: $800. FAR cheaper than the $2000 that Suncoast Porsche wants for a complete PSE system, and that does NOT include installation!

@TDS981 3 жыл бұрын

Definitely an option if you don't have PSE but you get what you pay for, the Carnewal systems I've heard are a bit quieter than PSE. I can't comment on the Cantrell mod.

@Flies2FLL 3 жыл бұрын

@@TDS981 YES, that is true, it is a little quieter. Still has a nice bark and some good pops.

@CeeeRock1 3 ай бұрын

Please I have p1046 on my cayenne GTS 2013. Car overheats in sport mode only

@jayhuss7684 Жыл бұрын

Fantastic mate. Im interested to know, was it a different change over valve for the heater? If so where was it located please?

@TDS981 Жыл бұрын

Yes there are several, lift the lid and follow the vacuum lines.

@ed5616 5 ай бұрын

but how to access the valves with the hands?

@JohnAdams-gn9cl 4 жыл бұрын

Love your videos, you're the only person I subscribe to on KZfaq. My left valve corroded and jammed shut, replaced under warranty, now a year later the right one has also jammed shut too! So now going back to Porsche again for that side to be replaced under warranty when they reopen 🤦🏻‍♂️ Looked more into the sound symposer after seeing this video and after hours trawling through Google I finally came across a guy on PH who explained the parts needed very well - lo and behold I realised it was also you haha! If I can source the parts, how difficult is it to fit myself? Does the engine need to come out to fit the airbox as some people have suggested or can I do it with fairly little experience? Could you perhaps do a video showing how to install both parts if you have time during lockdown? Thank you 🙏🏻

@TDS981 4 жыл бұрын

Hi John, that is incredible feedback really nice to hear. Got some more stuff of interest coming you way shortly please keep commenting and let me know what you would like help with its good to help me focus on the right stuff. Regarding the sound symposer you have a list of the parts so that's good, you need to open the engine cover and remove the plastic air intake and filter on the driver's side and replace it with the GTS airbox with the opening for the sound symposer tube. The easiest way is to remove part of the plastic intake manifold for access and then it all clips together. The sound symposer uses engine vaccum just like the PSE but it opens with vaccum instead of closing. By connecting it to the system you can have it always open when the engine is running which is what I recommend or you can install another changeover valve if you want and make it switchable with the sport button. It's not for the faint hearted but worth the effort in my opinion, car sounds sublime at the top end, provides a nice howl.

@JohnAdams-gn9cl 4 жыл бұрын

Test Drive Scotland thank you for the info, I think it’s one of those jobs which will make more sense once I take everything apart so I can see what you’re referring to! I would definitely want it open all the time, I don’t mind more noise and it would sound too artificial to me if it only came alive in Sport. Whether I can fit it myself is a whole different issue haha. That would be my suggestion for another video, I think there would be lots of interest in it! Keep up the good work and content 🙏🏼

@TDS981 4 жыл бұрын

Thanks John I guess I could make this video without pulling everything apart again using my existing footage. I don't fancy doing that roof again!

@adilsniper 2 жыл бұрын

Hiya, great video, I was wondering if I could get some advice from you or even the community. I have a 981 cayman S and unfortunately It was sat out for some time. The PSE valves have seized in the open position, the springy bolt things cant be pressed by hand and it does not close when the car turns on. I have been told by mechanics I have to replace the whole thing which is quite costly, is there any way of loosening them up so that I can get it to close again?

@TDS981 2 жыл бұрын

Hi thanks for watching. It's a good idea to do something about this before they snap. I would buy a can of penetrant and coat the area particularly around the plenum shape piece that attaches to the exhaust. And then after a few hours or next day try and move it by tapping on it gently, just don't push too hard or it may break. Good luck

@arnaudjacquemin2248 6 ай бұрын

Hello, did you had to remove the runners to replace the airbox with the symposer one? thanks

@TDS981 6 ай бұрын

I had to remove manifold for access, very tight

@rodneymorris4542 2 жыл бұрын

Excellent video Daz! Question for you. I changed out the exhaust system in my 981 to the Top Speed Pro 1 exhaust for a deeper sound. Sounds fabulous! Soon after, my coolant light came on but the car is not overheating. Could this be due to the valves are no longer connected and the button is no longer functional since the new exhaust does not have this feature to connect to?

@TDS981 2 жыл бұрын

Hi Rodney, thanks. Yes perhaps you introduced a vacuum leak into the system which will trigger the coolant light as it is all connected. You need to plug those lines to the valves.

@sebasb1996 4 жыл бұрын

Nice video, very useful! I have my valves stuck in closed mode. I think due to rust and corrosion, I can’t move them by hand. Not even after applying wd40. Do you have any tips?

@TDS981 4 жыл бұрын

Hi Sebastian, I would buy a stronger penetrating spray something like Plusgas or equivalent. Apply and keep trying to remove the corrosion where you can see it with something abrasive. I think with patience and time it will come free. Good luck and let me know how you get on.👍

@sebasb1996 4 жыл бұрын

Test Drive Scotland thanks for the reply, I will try and let you know if it works!

@TDS981 4 жыл бұрын

@@sebasb1996 as a last resort you can disconnect them and get them to a good garage to free up and repair.

@sebasb1996 4 жыл бұрын

Test Drive Scotland I found out the valves are stuck inside the exhaust pipe, so I have to take it to a garage indeed. Thanks for the advice!

@amyskal Жыл бұрын

Great videos. I bought my 2014 Boxster 981s after watching your videos. I just retrofitted PSE and programmed the button at dealership. i have a few questions. The baseline sound is significantly louder than the stock exhaust, as if it's left in open valves mode, also there doesn't seem to be any sound difference between valves open or closed (i checked both valves and they are moving), the only difference is a bit louder sound on higher RPM and pops and gurgles. But nothing different during idling, what could be the issue?

@TDS981 Жыл бұрын

Hi and thanks. There isn't a great deal of difference at idle you should hear a louder note when driving and pops and bangs with the PSE on. If the button is opening and closing both sides then all is well..enjoy the extra noise.

@amyskal Жыл бұрын

Great thanks

@pauldodds3940 4 жыл бұрын

Great Video. Over a five month period, both valves on my car seized. Replaced entire exhaust assembly under warranty in both cases. As a precaution for the future, can you recomend a good high temperature lube to at least try and take care of the new ones?

@TDS981 4 жыл бұрын

Something very high temp would be ny suggestion. This one goes to around 140c which may be enough for the valves since they get some air. amzn.to/2BUIgmp My other piece of advice would be to drive with the exhaust off from time to time as that will ensure they are operating in both positions and less like to seize. I made another video documenting other prevention tips you should check it out. Thanks 😊

@zihaotang79 Жыл бұрын

This is a really good video - thank you! I have a 981 Cayman, which happened to have the “cooling system fault” error popping up over the weekend. Following your advice, I checked my exhaust valves and found that one is always closed and the other is always opened with the PSE switch off and on. The parts are rusted and could not be moved at all. In this case I guess it’s a bit too early to tell if it’s the change over valve problem? Just ordered some penetrant to see if I can get the bolts moving freely

@TDS981 Жыл бұрын

Thank you, yes first fix the valves, take your time with lots of penetrant and tap with a hammer over a few days, don't try to force it or you might snap the mechanism. Good luck 🤞

@zihaotang79 Жыл бұрын

Update: I sprayed the actuators three times and finished half can of WD40, but the rods are still rock solid (some surface rust did come off though). Looks like it may take more patience than I expected. On a separate note: in your case, did the cooling error message disappear when you replaced the change over valve or did you have to reset something?

@zihaotang79 Жыл бұрын

@@TDS981 Will do! Just ordered the specialist penetrator version of WD40 and hopefully it will do the job. Going to be really patient with this one

@TDS981 Жыл бұрын

Yes you need something stronger, the area to focus on is the part that looks like a guitar plectrum. The vacuum system is all linked so as soon as the fault changeover valve is functioning properly it will prevent the error.

@zihaotang79 Жыл бұрын

@@TDS981 Glad to hear that! The car seems to have multiple COVs, but some are a lot easier than others to access. Let’s hope that it’s the one for the exhaust that is broken😂

@jamieparnell7034 2 жыл бұрын

Thanks for the great content. I am struggling to source the wiring parts beyond the changeover valve. Other than the switch pack and the changeover valve (including piping etc) which parts do I need for DIY installation? Trying to join the dots from changeover to switch pack... Best regards!!

@TDS981 2 жыл бұрын

I'm afraid my knowledge on retrofitting PSE is limited, my car had it fitted at the factory. I guess you are looking for the PSE loom that connects to the centre console. I'm sure the parts guy at the dealership will find this for you quite quickly.

@jamieparnell7034 2 жыл бұрын

@@TDS981 thanks for the response! They seem reluctant to give the details.. I'll keep searching. Take care!

@TDS981 2 жыл бұрын

@@jamieparnell7034 try this one 98161290500.

@shawnledwez6308 3 жыл бұрын

Hey where exactly are those valves. I cannot find them on my 2006 cayman with sport exhaust

@TDS981 3 жыл бұрын

I can see them on in this picture further back between the back boxes and the cats. rennlist.com/forums/attachments/987-981-forum/714868d1364241163-fs-oem-sport-exhaust-for-987-porsche-987-sport-exhaust.jpg

@mikeormond7883 Жыл бұрын

Please could you to a video on install of the sound symposer tube from the gts?

@TDS981 Жыл бұрын

Maybe 👍

@cisco680 3 жыл бұрын

Thanks for posting this. I added new exhaust gun tips and now they work in reverse. When I enable the system with the button it closes the valve. Earn I press it again the button light goes out but the light is off. Drives me crazy because when I put the car in sport mode it closes the valves instead of opening them. Any suggestions.

@TDS981 3 жыл бұрын

Have you swapped the system so the mechanical valves have been changed? The stock system opens the valves when there is no vacuum and closes them if it receives it. The switch just alternates that position. What position are yours in with the engine off?

@pcarguy981 4 жыл бұрын

Do you have any more details about the GTS sound symposer retrofit? Thank you for the great video!

@TDS981 4 жыл бұрын

Sure, what do you want to know?

@pcarguy981 4 жыл бұрын

@@TDS981 I guess the big question is how do you like it and do you think it was worth the time/expense to retrofit? Do you happen to have a list of parts needed (I looked at some parts diagrams and can't find the details)? Beyond that it looks semi-easy to throw in place? Thanks again.

@TDS981 4 жыл бұрын

Yes I think it's great, the induction roar under light throttle is nice to have but the best bit is higher up just before changing up sounds awesome 👌. You need the part itself £150 but also the GTS airbox on the driver's side for the connection point. Accessing it is difficult, it's definitely worth it but only if you can get the airbox at a reasonable price like I did.

@TDS981 4 жыл бұрын

This video gives an indication of the sound around 2min 25s kzfaq.info/get/bejne/aLObo7eqsrS6aHk.html

@theworldsyourlobster1583 4 жыл бұрын

My friends 991 3.8 has the sound symposer , every time he takes me out it sounds epic under throttle, that throttle noise it great inside the car , looking at it looks like a pretty easy job to do and make your own , they don’t do one for the 987.2 , looks like there is a one way flap , I can’t see why I can’t make my own with a 30 mm pipe or flexy pipe from air box to hole it back of cabin , and put a small piece of air filter foam at the cabin end ? Just make a hole in air box to channel sound ? Basically it must suck some air from cabin ... the one way flap could be a problem it says that’s to stop fumes coming inside , but basically it sucking in ? I could just buy the 981 pipe for £150 and modify it ... is the another servo flap that opens on it on sport plus and then closes it ? I’m not bothered about that want it open all the time , easy turn off just put a plug in one end ... just done a internal rear exhaust mod I think it’s basically the same as what carnewal do , handy being a welder ... its good because not silly loud on tick over but howls over 3000 rpm , got some 200 cell headers going on next month fingers crossed the bolts don’t snap ...

@ForgetfulFoot 4 ай бұрын

Someone really needs to make a diagram of where all the 981 Change Over Valves are. They have one for the 911. Just not the Caymans

@TDS981 4 ай бұрын

It won't be significantly different the 3.4 engine is just turned around and pushed further forward.

@PAKNVNM 3 жыл бұрын

I enjoy your videos and appreciate you sharing your knowledge. I am curious if I have a bad change over valve... I ask because I recently installed a race exhaust on my 981 gt4 which doesn't have exhaust valves... its loud all the time. The shop plugged the vacuum lines and after driving it for an hour or so after the install I received the "Cooling system fault" message. I called the exhaust manufacturer and they told me to unplug the vacuum lines, reset the fault message and all would be fine. I am going to try that, but I feel that leaving them exposed to the ambient may trigger fault as well. Just curious if you have heard of this. Thanks

@TDS981 3 жыл бұрын

Hi thanks for watching. The vacuum system is all linked and that includes your coolant system. When my changeover valve was faulty I received the same message but had no coolant issue. I would check the vacuum lines are plugged properly, you can't unplug the lines because then you would introduce a vacuum leak.

@PAKNVNM 3 жыл бұрын

@@TDS981 thanks for the reply. The exhaust manufacturer recommended I unplug both vacuum lines that went to the PSE mufflers and let them vent to the ambient. I too am concerned about introducing a leak in the system but drove around for an hour today and no “coolant system failure” message. I’ll let you know if the fault message comes back on. Thanks again for the response 👍🏻

@TDS981 3 жыл бұрын

@@PAKNVNM it could just have been a blip from when it was disconnected earlier. If it happens again then you need to check the plugs and that the vacuum system is sealed, if the exhaust switch is on (lit) on the centre console then it should be sealed at the solenoid valve in the engine compartment, if the button is off then you are reliant on the plugs they inserted at the lines.

@PAKNVNM 3 жыл бұрын

@@TDS981 thank you! I was curious about what to do with the exhaust button, whether to turn it on or leave it off. I will leave the exhaust bottom off and keep the vacuum lines plugged. Thanks again for the info!

@cobycoby12345 3 жыл бұрын

I have a Cayman 981 it just game me the fault cooling system message and looking at your video I checked my pse exhaust and after starting the engine and leaving it to idle for 10 minutes the valves won't close. I press the exhaust button and they won't close they remain open. Pushed the valves and they spring back just like the video. What is my cars issue?

@TDS981 3 жыл бұрын

Hi, don't you think it looks like the exactly the same issue as mine? It sounds like your vacuum solenoid is faulty, you'll have to replace it just as I have done. It's slightly easier to access in the Cayman. I assume you have no signs of coolant leak?

@cobycoby12345 3 жыл бұрын

@@TDS981 no signs of coolant leak. What you changed in your video is the change over valve is that what I need to change? Or is the vacuum selanoid something else and where is it located? Do I have to open the engine cover too?

@TDS981 3 жыл бұрын

@@cobycoby12345 hi yes we are talking about the same thing, you have to change the changeover valve just as I have done in the video. You would need to access the engine but it's a bit easier on the Cayman.

@cobycoby12345 3 жыл бұрын

@@TDS981 Thank you very much for your help. Much appreciate it.

@WhoScopes Жыл бұрын

Hey sir, I’ve lost the deeper sound of PSE. Pops and crackles are still there but very diminished. My valves move when I press on them. The stems that move them are always in the default open position. Pressing PSE/sport/sport+ does not move them at all. The crazy thing is, despite them supposedly being stuck in open, the exhaust is a lot quieter. Any ideas?

@TDS981 Жыл бұрын

Sounds like you have the same problem as I did in the video. There's more to the sound than the valves being open the ECU knows when something is wrong.

@WhoScopes Жыл бұрын

@@TDS981hank you so much for responding. Since my valves do not move no matter what (engine on/off) (pse on/off) do you think I could have a valve issue AND a changeover valve issue?

@TDS981 Жыл бұрын

@@WhoScopes if they move manually and spring back then they are ok

@WhoScopes Жыл бұрын

@@TDS981You are a legend thank you. I second everyone’s comments about the GTS sound symposer vid. My GTS was totaled due to hail and just picked up a 981S. I love it but that symposer would be nice!

@stevefoster1241 3 жыл бұрын

I had this issue at the weekend but my valves were not moving when the car was started so assumed it wasn’t the valves as both appeared stuck. First drive since the weekend and all appears well again. Seems odd for both valves to stick at the same time I thought. You seem to be able to move your valves easily but when I questioned Porsche on this they say they need a bar to apply sufficient pressure to move them? Car booked in with Porsche arrggg

@TDS981 3 жыл бұрын

Hi Steve, thanks for your comment. Note that when the car is started from cold they won't move for around 30 seconds, but you should always be able to move them with your hand, they feel spring loaded, if you can't they are seized. Make sure you move them every journey and when the car is laid up then move them manually.

@chris-eccohealthcare 3 жыл бұрын

Many thanks for this informative video. Can you please advise where you got the part and how much. Thanks

@TDS981 3 жыл бұрын

Chris, the details are in the description, the part is available at the parts counter at the dealer or you can Google it. It's just a simple solenoid really.

@chris-eccohealthcare 3 жыл бұрын

Cheers mate. I think this is the issue with my 91.1 c2s. Seems the pse is on constantly and the button is my doing anything.

@TDS981 3 жыл бұрын

@@chris-eccohealthcare do the valves spring back manually when you push them in or are they seized?

@severinkamm2747 Жыл бұрын

@@chris-eccohealthcare I have the same issue on my 991.1 C2S. Exhaust just stays open, I checked the lines at the exhaust but will have to take the Wing off to check if any vacuum lines came unplugged and if not I will replace the exhaust Change over valve next. What ended up being the issue for you? My Valves are not seized and I can push them open by hand, my Coolant warning came on during a very spirited drive and PSE stopped working right after. What ended up being the issue for you?

@severinkamm2747 Жыл бұрын

@@TDS981 See my comment, my valves push back manually, any advice: "I have the same issue on my 991.1 C2S. Exhaust just stays open, I checked the lines at the exhaust but will have to take the Wing off to check if any vacuum lines came unplugged and if not I will replace the exhaust Change over valve next. What ended up being the issue for you? My Valves are not seized and I can push them open by hand, my Coolant warning came on during a very spirited drive and PSE stopped working right after. What ended up being the issue for you?"

@willrok13 Жыл бұрын

Where are other changeover valves located? I am having an engine over temp issue on a 718 that I am about to dig into. Any help is appreciated. Thank you.

@TDS981 Жыл бұрын

Sorry the 718 isn't my specialist subject but on that car an overheating issue is more likely to be water pump related.

@willrok13 Жыл бұрын

Thank you!

@gnailuh 2 жыл бұрын

Howdy! I have a 2016 981 Spyder with PSE. It seemed to be working great. I recently had it changed to a Soul Performance cat back valved exhaust. My problem now is the opposite. It's always open. Shop checked it out, says vacuum from line is only about 2". Is it possible that the vacuum for OEM exhaust is ok but the Soul version isn't enough? Or just coincidence that the change-over value having issues just at this time?

@TDS981 2 жыл бұрын

Hi, can you explain again, if you aren't connected to the vacuum line it will stay open.

@gnailuh 2 жыл бұрын

@@TDS981 I am connected. But the pressure in the vacuum line seems to be too low to pull the Soul exhaust values shut… so always open. But seemed to have worked with OEM PSE. They suspect it’s cross over valve. Just asking for your opinion.

@TDS981 2 жыл бұрын

Hi, yes I would agree that it could be the changeover valve. Either that or one of the lines isn't properly connected.

@ed5616 5 ай бұрын

where should we spray the lubricant ?

@TDS981 5 ай бұрын

All over the mechanism. Particularly the plectrum shape piece. It's more important that you don't cold start, stop and park up for weeks. The water produced at cold start sits and rusts the mechanism.

@ed5616 5 ай бұрын

@@TDS981 ok thanks got it

@mip83 4 жыл бұрын

Quick question on this one. With your PSE, let's say you've got the sport exhaust switched on, is there any dynamic open/close behavior with throttle/rpm or do you expect the valves to stay open all the time? With mine at idle, it looks ok, as I press the switch on/off the valves open/close. But I swear I can sometimes hear them actuating between 1-2k rpm. I think there's sometimes there's almost a bit of a delay as I press the throttle and then the it sounds like the valves pop open. Makes me wonder if this is normal or if something's not quite behaving? (2012 981 S)

@TDS981 4 жыл бұрын

I don't know for sure I'd have to get a camera back there to check but if you Google this you will see that some people report that the valves close again after you drive off and open again after you reach higher rpm or speed. I can't confirm or deny as I don't hear mine moving and different ECU software versions could behave slightly differently. If you see the valves opening and closing with the switch with a warm engine at idle then you are ok, you should hear more pops and bangs, it's very obvious to me when it's not working even at one side.

@armandochu6676 2 жыл бұрын

i have the same coolant system fault but i don't have pse. what do you suggest?

@TDS981 2 жыл бұрын

If the coolant level is ok, there are several changeover valves/solenoids in the vacuum system just like the one I changed any one of those may be causing the issue.

@DrDavid777 3 жыл бұрын

Couldn’t you just remove the vacuum hose to always keep the valve open? (I know it’s better to have control but just curious)

@TDS981 3 жыл бұрын

Yes that is an option as long as you plug the lines. I personally wanted to retain the switch for longer distances and there are times when it's good to go under the radar, if that's possible with a bright red car 😂

@Stewwwwww 3 жыл бұрын

Hi I’m thinking of getting the 981s like yours, would you recommend the Porsche extended warranty?

@TDS981 3 жыл бұрын

My strategy when I bought mine was to buy an approved used car from Porsche in that time they replaced a couple of things, PSE being one and air con condensers being the other major. My confidence has since grown in the car I think they are screwed together pretty well and I don't see many major failures. My friends car has also been identical mechanically . If you are going to be doing big mileages I think it's worth it if the car is a weekend toy then probably not. On the whole the 981 cars are reliable it gives peace of mind and an easy life but these are well engineered so it is not essential.

@Stewwwwww 3 жыл бұрын

@@TDS981 thank you

@silversaar6689 2 жыл бұрын

I have 2019 registered 2,5L 718 GTS. Got some "cooling system fault" when valves were closed. I do have PSE without OPF. Made perfect noise + pops&bangs. This friday porsche dealer replaced exhaust valve unit under extended warranty. Now the exhaust doesn't sound so loud anymore, even on higher rpm's when pushing hard I can feel that the pops are not the same. I can see/feel that valves are closing near 3000rpm. Also when revving on neutral it closes the valves automatically even on the sport mode. Is it possible that they did something wrong when replacing the valve unit under the car? Can't believe that changing this valve unit will cause it to behave differently. It's just a mechanical item that was replaced. Is it possible that this solenoid is cauaing this thing that the valves are closing after 3000rpm? Any idea?

@TDS981 2 жыл бұрын

Sorry to hear that, if it's not right you need to book it in again and tell them to check and fix. If you are seeing the valves open and close I'm not sure what is wrong, but definitely possible something hasn't been put back in the way it was originally. If you were getting the coolant warning you could have a faulty solenoid, are you saying they replaced the valve unit to rectify that error?

@silversaar6689 2 жыл бұрын

Thanks for the quick reply...didn't expect that🙃 Hope it will be solved and the car was not somehow remapped as per EU noise regulations to keep the valves act differently. It was there for 30-40minutes. Let's see what they say.

@TDS981 2 жыл бұрын

@@silversaar6689 maybe the software has been updated at dealer, maybe a vacuum hose is lose, let me know anyway 👍

@simonemolinaro6725 4 жыл бұрын

Hi, so is it possible to mount on the gts sound symposer on my 981s? I have the pse, but please give me more details. I already know about the tube and the airbox, every thing seems to be plug-in, but what about the electronic connection whit sport botton? Thanks Simon

@TDS981 4 жыл бұрын

Hi Simon thanks for watching, if you want it activated with the sport button as per the GTS search the engine loom around the PSE for another plug, there should be one there and buy a changeover valve and a couple of t pieces and extra hose for the vaccum line and hook it together, then activate the option I150 with PIWIS. Alternatively hook it up to the vacuum line and it will stay open all the time when the engine is running. I have sport on all the time anyway so I that would be my suggestion if you do the same. You will get some more induction roar at low rpm in 7th but nothing obtrusive. Best bit is the roar at the top end and into the next gear it's a lovely sound. 👍

@simonemolinaro6725 4 жыл бұрын

ok thanks a lot, so your tip is simply to connect the new airbox and the hose with the symposer directly at the hole in the firewall? There is not some other pieces or connections to do? In this way the symposer is already always automatically open? Thank you

@TDS981 4 жыл бұрын

@@simonemolinaro6725 yes but you will also need a bit of vacuum hose and a t piece connector to connect the symposer to your existing vacuum line and then yes it stays open. Vacuum present = open on these.

@simonemolinaro6725 4 жыл бұрын

Ok, you are really kind, I think I understand. In the next days I'll go to at P. Center for the 3^ white hose and the t piece to connect . I will update you, maybe even on instagram direct Really thanks a lot

@TDS981 4 жыл бұрын

Did you manage to get a GTS airbox? Be prepared to remove the intake manifold for access, should buy the seal gasket for that too just in case.

@davidcox3615 2 жыл бұрын

Did you retrofit the PSE yourself or was it factory installed?

@TDS981 2 жыл бұрын

My PSE was installed at factory, I would never buy a 981 without it fitted.

@stevefoster1241 3 жыл бұрын

Mines playing up again. Did you say there was a way to ‘hardwire’ them open ?

@TDS981 3 жыл бұрын

There is but if it's playing up it's likely seized and you need to free up the valve. What's up with it?

@stevefoster1241 3 жыл бұрын

@@TDS981 just sticks but easy enough to free off but just a pain. If Porsche try and charge for it despite being under warranty I wanted to know if there was a way to fix in the open position?

@TDS981 3 жыл бұрын

@@stevefoster1241 they won't charge for that, definitely covered, they replaced mine under warranty a few years ago.👍 If it's stuck then it's generally stuck in the open position because that's where it sits when the engine is off. The other way is to disconnect the vacuum lines at each valve but you then need to plug the lines or you will have a vacuum leak in the other systems.

@stevefoster1241 3 жыл бұрын

@@TDS981 fingers crossed

@cdperky6897 3 жыл бұрын

Great video, I'm considering having PSE installed on my 2016 Boxster after the fact. Wondering what your thoughts are on doing it after and not from factory? Should I anticipate any issues having it installed after the fact?? Cheers!

@TDS981 3 жыл бұрын

Chris, tomorrow after breakfast jump in the car and visit the parts desk at your OPC and don't forget your credit card💪💪💪 Seriously though, this it's a common retrofit and will only enhance your ownership experience. Get it done!

@cdperky6897 3 жыл бұрын

@@TDS981 So no need to worry?

@cdperky6897 3 жыл бұрын

@@TDS981 will it sound better even though mine isn’t an “S” model?

@TDS981 3 жыл бұрын

@@cdperky6897 no need to worry it's quite a simple system.

@TDS981 3 жыл бұрын

@@cdperky6897 arguably the 2.7 sounds even better 👍

@89vette1 4 жыл бұрын

I have a 991.2 GT3 and the valves are stuck open. I can’t find any resource as to where the change over valve is on my car. Do you happen to know? Car is under warranty so I might just take it in for service. I’d like to try it myself first.

@TDS981 4 жыл бұрын

That means they have no vacuum, are the vacuum hoses definitely connected to the exhaust valves? Have a look underneath and find out. I'm not certain on the 991.2 but the changeover valves on your generation should be more reliable and definitely more accessible than on mine. Nothing coming up on Google? This may help, found this on YT. kzfaq.info/get/bejne/rbR9iqaLntDHaas.html

@89vette1 4 жыл бұрын

Test Drive Scotland I’ll check that out. I’ve been searching for days. The vacuum lines are definitely connected. I even checked to see if someone shoved a bb in the line. I have yet to pull the line to see if there is vacuum when the car is running and the PSE switch is off.

@89vette1 4 жыл бұрын

Test Drive Scotland I am man enough to admit that during a week of trying to figure this out ( my first Porsche that I’ve had for a week) the left side vacuum line was not on. It must have gotten knocked off during transport/ strapping. I am now good to go! Thanks again my friend.

@TDS981 4 жыл бұрын

@@89vette1 great news Jason, glad that our conversation has saved you a lot of hassle. All the best, just do me a favour and keep them open as often as possible 😎

@89vette1 4 жыл бұрын

Test Drive Scotland Oh you bet. I have 2 F cars (458 Spider and 812SF) as well as an AMG C63s Cabriolet. My car buddies including many that have F cars also have Porsche’s and for years kept telling me what I’m missing. After having this car for a week, I get it. Cheers!

@theworldsyourlobster1583 4 жыл бұрын

There must be a way to map the gts exhaust crackles into a 987.2 3.4 and have it linked to exhaust switch , I’ve seen a video that sounds just too over the top on a CaymanR kzfaq.info/get/bejne/sMiJmsumqdm2YI0.html Any wizz kids out there got any ideas ?

@TDS981 4 жыл бұрын

I'm sure anyone who can map a car can do that for you mate.