Originally Posted by Rennolazine

Thats too bad. So what im gathering is either the valves or the muffler need to go for full sound potential.... and revving like a hooligan. Lol. are you also saying that when you press the pse button theres no noticeable difference unless your driving above the point where the valves open? Ive seen videos from caragraphic and other fabricators where “pse on” not just valve controllers make a difference in rev volume and burbles. Is the car just running a richer mixture if its not a change in the exhaust path?

Originally Posted by Larry Cable

@Soul Performance count me in for a pair of slash cut, double wall, satin black tips with either "Spyder" or "718" lettering!!! (in addition to my OPF pipes)

Originally Posted by Larry Cable

Originally Posted by Soul Performance

Valves and mufflers are all fine to have, you just have to decide how you want them controlled to either be on maximum attack all the time, or close the valves and fly under the radar only when you want to. If you are sitting at a standstill and press the PSE button, you can rev the car with valves open to 5k rpm. If you keep that button pushed and lit up and gently get the car moving you can then rev it with valves open until redline. Still with the PSE button pushed and lit up, if you start to accelerate the valves will close automatically until they reopen at 5k rpm. That's the problem with the PSE programming, the valves Do Not stay open with the button pressed like they did on the previous generation 981. This is due to more stringent sound restriction in Europe, and we got the short end of the stick.



You can count me in on that project, we'll make it happen : )



Already covered that in depth a few times earlier in the thread "Like the previous generation 987.1/987.2/981 exhaust systems (not from just us but most every exhaust manufacturer) we've found heat shielding to not be necessary to include. If our over axles pipes maintained a giant heat soak at the end in the form a particulate filter right by the rear tire, then yes a heat shield may be necessary. However, those are gone and no longer a concern.

For those that simply want to go above and beyond with cost not being a factor (no such thing as too much heat prevention) we will provide an optional service of having our over axle pipes sent to Jet Hot Ceramic Coating to have the pipes coated in their entirety with their 2500degree ceramic coating, which would provide better thermal retention characteristics vs a heat shield covering any portion of the exhaust."


Best regards,
John Gaydos

Originally Posted by Soul Performance

Valves and mufflers are all fine to have, you just have to decide how you want them controlled to either be on maximum attack all the time, or close the valves and fly under the radar only when you want to. If you are sitting at a standstill and press the PSE button, you can rev the car with valves open to 5k rpm. If you keep that button pushed and lit up and gently get the car moving you can then rev it with valves open until redline. Still with the PSE button pushed and lit up, if you start to accelerate the valves will close automatically until they reopen at 5k rpm. That's the problem with the PSE programming, the valves Do Not stay open with the button pressed like they did on the previous generation 981. This is due to more stringent sound restriction in Europe, and we got the short end of the stick.

Best regards,
John Gaydos

Originally Posted by mjw930

Pull the vacuum hoses off the valves, plug the hose and poof, you have the sport exhaust 100% of the time for about $2.00. If it’s confirmed that cylinder deactivation is also shut off when you turn off AS/S then you’re good to go. One of the main reasons for closing them is to muffle the horrid sound of running on 3 cylinders.

Originally Posted by Westcoast

Confirmed that cylinder deactivation turns off when Auto Stop/Start button is set to on!

The only thing for me and some others and the reason for the valve controller is I don't want Sport exhaust on between idle and 4K Rpm all of the time, there are times to be stealthy too.

Originally Posted by mjw930

Agreed but I suspect the stock exhaust with the OPF delete pipe and valve open all the time may be quieter than an aftermarket header, pipe and muffler delete with valves would be closed. It’s certainly worth testing and finding out before you drop $5K+ on an exhaust.

Originally Posted by chalkspyder

Let me put it this way. The stock PSE programming completely ruins the experience. It's not even worth a conversation because all it does is close the values in a rev band that you spend most of your time in while driving normally around town...meaning, you only hear the exhaust note of the valves being open as you stop at a light in idle or if you get the RPMs above the 4s while moving. The "while moving" part is important because this behavior only shows up if you are moving - said differently, if you are stationary and you rev the engine it does not close the valves. You have to experience it to understand how completely annoying it is and after a while you find yourself upset everything you drive the car. With the controller you can force the valves to be open all the time (bonus is if you drive with it open all the time...it stays open even after your shut off and restart the car...v resetting every time you turn off the car). You can always turn off the valve controller with a button click which gets you back to factory PSE operation. In my opinion, I don't really see this as an option....valve controllers are a must regardless of whether you are changing the exhaust system or not. Its a big improvement on the factory experience.

Originally Posted by tdlondon

Totally agree and I go beyond: The OEM PSE actually only helps between idle and 1800 RPM and maybe between 4-5k. After 5k even with the PSE off ("closed") the valves open and it screams as it should!
Another perk of the valve controllers is that you can program them to work with the home link buttons. So I opens my garage, II opens the valves and III defaults to OEM.

Originally Posted by Ledfoot

I didn't read every post in the thread (apologies in advance if this is a repeat) but the other benefit of the valve controller is that it stays set when you shut the car off. Now I only have two buttons to push when I start-er up.

Originally Posted by bvita

Anyone in SoCal have a recommended installer, or a possible dealer?

Originally Posted by bvita

Anyone in SoCal have a recommended installer, or a possible dealer?