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SOUL | 718 GT4/Spyder Exhaust Development

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Old 10-07-2020, 04:16 PM
  #316  
Rennolazine
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Originally Posted by Soul Performance
We aim to please, I'll take note of the request for the next round of videos

Now that said, the factory PSE programming is a REAL buzzkill compared to every Porsche we've experienced prior. Pressing the PSE button really doesn't do much. It still closed the valves until 5k rpm in first gear and 3800rpm in second gear, that's near 9krpm of in the first two gears that the PSE programming is dampening the exhaust experience. Our valve controller kit will either allow you to maintain this PSE programming, or you can press a button to override the PSE programming and keep them open throughout the whole powercurve. Simply press another button and it's back to PSE programming again. Factory control when you want it, override when you want it, easy peasy : )

Now for those that want to change the PSE programming itself, and tune it to do what you want when you want...that is coming too! Mike Levitas and the guys at TPC racing have been hard at work adding an additional feature to their much loved DSC Modules that allows you to fully program your own valve control. Mike is successfully testing this feature on his personal 718 Spyder, which will be receiving a set of our Competition Over Axle Pipes shortly to throw in the mix. It's a game changer and we are VERY excited for that to come full circle. We are proud to offer their DSC modules to partner with our products, as we have had nothing but exceptional feedback from our customers running them.

Best Regards,
John Gaydos
will the pse button at least let you rev like a hooligan by partially opening valves?
dsc is on the radar also
Old 10-07-2020, 04:21 PM
  #317  
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Originally Posted by Rennolazine
will the pse button at least let you rev like a hooligan by partially opening valves?
dsc is on the radar also
Nope, sorry buddy. The exhaust valves from factory and ours are mechanically actuated via vacuum pressure. Not possible for partial opening, it's either fully open via spring pressure or fully closed via vacuum overwhelming that spring pressure. To convert to electric valves and programming that would be an utter nightmare lol.

Regards,
John
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Old 10-07-2020, 04:32 PM
  #318  
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Originally Posted by chalkspyder
I am lucky enough to be the first to receive the new Valved Exhaust System currently in R&D. There is still work going on to complete the system but I had the privilege of having the current prototype fitted on my 2020 718 Spyder (@chalksyper on IG). BTW, I also had the Soul valve controller installed a few weeks ago and it made such a big difference for me...that was step 1. As John describes in an earlier post, this is a must. Back to the exhaust (step 2)....here is my first impression, both from inside the car and also from outside as it drives by/away.

Standing outside the car:
  • Oh my. The clarity and quality of the sound (from about 30 yards back) as it drove away was incredible. A few of those overuns as you upshift could be heard off into the distance. It's not the same as the absolutely perfect stock overruns on my old 981 Spyder but it's a nice bonus knowing that the overruns were taken away from the 2020 GT4 and Spyder.
A brief drive for about 10 minutes:
  • At idle, the car sounds about the same as it does stock at idle (or at least I can't tell the difference)
  • As you drive off it is very clear that this is different experience. All I can say is that the car sounds like it feels now - powerful. The ear to ear smile starts right around 3500 and gets progressively better as you build the RPMs --- and the sound remains clear and powerful even as it climbs to a higher pitch sound. It does not get as high pitched as my prior 981 Spyder and for sure not the high pitch of the GT3s, but man...it sounds so good. I pumped.
  • What is even more exciting is that this experience was before the OAPs are installed (step 3)....that is happening this week so I can't wait to hear how the combination of the new exhaust system and the OAPs sounds.
@Soul Performance You guys have a winner with this one. I'm ready for the final product.

I would normally want to post videos and photos but I won't steal the thunder from Soul. You will see and hear the final product very soon. In fact, there is already a video on youtube of prototype #1 (not the system I just experienced...what I experienced is prototype #2).

Here is the video of prototype #1...gives you an idea: https://www.youtube.com/watch?v=OWTCn2IynMk
It was great having you stop by Ryan, the initial impression on your face when you pulled back in was worth every second we've put into this haha. I cannot wait for your next drive, which may be sooner than expected! I appreciate you chiming in with your feedback

Regards,
John
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Old 10-07-2020, 05:06 PM
  #319  
MEM82
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Great work guys! Excited for my upcoming race exhaust!
Old 10-07-2020, 05:18 PM
  #320  
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Originally Posted by Soul Performance
Now for those that want to change the PSE programming itself, and tune it to do what you want when you want...that is coming too! Mike Levitas and the guys at TPC racing have been hard at work adding an additional feature to their much loved DSC Modules that allows you to fully program your own valve control. Mike is successfully testing this feature on his personal 718 Spyder, which will be receiving a set of our Competition Over Axle Pipes shortly to throw in the mix. It's a game changer and we are VERY excited for that to come full circle. We are proud to offer their DSC modules to partner with our products, as we have had nothing but exceptional feedback from our customers running them.

Best Regards,
John Gaydos
Ooh, very exciting news. Won't have to make such a device myself

The exhaust flap control feature of DSC + your over axle pipes + valved exhaust will fix the only deficiency of my Spyder.

Last edited by wizee; 10-07-2020 at 05:23 PM.
Old 10-07-2020, 05:41 PM
  #321  
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Originally Posted by Rennolazine
Thanks for the writeup and sacrificing time with your spyder. Do you have any clips or comments with stock pse valve programming? It appears the footage is pse off “valves closed” vs valve controller for “valves open”. Im not planning on running a valve controller at this point. With the valves set to always open this is effectively an expensive x pipe which kind of defeats the purpose of the bespoke muffler. John please give us the goods with pse button pressed alone in this comparo.
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.

Last edited by chalkspyder; 10-07-2020 at 07:09 PM.
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Old 10-07-2020, 07:50 PM
  #322  
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Sound great so far, but there was no WOT in the valves closed configuration. With the muffler being a total pass through without any baffles, it should sound pretty wicked with the peddle to the metal. As we could hear with the valves closed and the throttle cracked, it is very quiet and hopefully without any drone. It seems to me that a single pipe without the cost and complication of valves and separate plumbing for each mode would simplify the set up. No one, and I mean no one is happy the the OEM valve set up. Sounds like with the right exhaust set up, all you would need for the quite vs sport mode is throttle control. Slow mild throttle inputs would be the quite mode as heard on the video, and aggressive throttle inputs such at WOT would instantaneously lead to the sport mode without ever having to mess around with any buttons. Isn't that the way it used to be?

If the extra piping and valves were removes from the PSE type version, that would make room for a quarter wave Helmholtz pipe to further reduce drone and tune the sound of the system.

I am looking for an open unrestricted sound, without drone, that is not too loud, and showcases the amazing sound of our flat-6 engines. That seems to be one of the common themes on many of these exhaust threads here on the forum.

Great work so far John. Look forward to the more official reveal with picture and more videos.
Old 10-07-2020, 09:04 PM
  #323  
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Great to hear the new DSC modules will have the ability to program the PSE! Two questions:

1. Will this only be available on new modules (V3?)?
2. When will the new DSC modules be ready for sale?

Thanks!
Old 10-08-2020, 11:28 AM
  #324  
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Originally Posted by MEM82
Great work guys! Excited for my upcoming race exhaust!
We're excited that you're excited!

Originally Posted by lovetoturn
Sound great so far, but there was no WOT in the valves closed configuration. With the muffler being a total pass through without any baffles, it should sound pretty wicked with the peddle to the metal. As we could hear with the valves closed and the throttle cracked, it is very quiet and hopefully without any drone. It seems to me that a single pipe without the cost and complication of valves and separate plumbing for each mode would simplify the set up. No one, and I mean no one is happy the the OEM valve set up. Sounds like with the right exhaust set up, all you would need for the quite vs sport mode is throttle control. Slow mild throttle inputs would be the quite mode as heard on the video, and aggressive throttle inputs such at WOT would instantaneously lead to the sport mode without ever having to mess around with any buttons. Isn't that the way it used to be?

If the extra piping and valves were removed from the PSE type version, that would make room for a quarter wave Helmholtz pipe to further reduce drone and tune the sound of the system.

I am looking for an open unrestricted sound, without drone, that is not too loud, and showcases the amazing sound of our flat-6 engines. That seems to be one of the common themes on many of these exhaust threads here on the forum.

Great work so far John. Look forward to the more official reveal with picture and more videos.
Thanks for the kind words my friend, and here's an interesting thought for you. Perhaps the design of our valved exhaust system is perfect for you as the primary and secondary flowpath are both being used with valves open, and the secondary flowpath by design helps to smoothen out the tone significantly with the valves open. Perhaps you can consider our valved exhaust system a non valved exhaust system for your goals and simply run it valves open all the time, because it's just that good and it's simply a bonus for people to be able to run it valves closed and fly under the radar more than usual

Originally Posted by wizee
Ooh, very exciting news. Won't have to make such a device myself

The exhaust flap control feature of DSC + your over axle pipes + valved exhaust will fix the only deficiency of my Spyder.
Originally Posted by CDACH
Great to hear the new DSC modules will have the ability to program the PSE! Two questions:

1. Will this only be available on new modules (V3?)?
2. When will the new DSC modules be ready for sale?

Thanks!
I can't say I have the answers to those questions just yet. However, Tom Chan of DSC does and I just got off the phone with him a few minutes ago, inviting him as a fellow Rennlist sponsor and friend of our company to chime in on this development thread and give you guys the nitty gritty on what they've been up to

Best regards,
John Gaydos
Old 10-08-2020, 05:15 PM
  #325  
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Originally Posted by Soul Performance
Exhaust Tip Update!
.

Our plans for exhaust tips are as follows:

Shape: Slash Cut or Straight Cut

Style: Double Wall or Single Wall

Finish: Signature Satin (Silver), Brushed, Polished, Black Chrome, or Satin Black

*Custom Lettering or No Lettering is Possible, "SOUL" Will Be Standard
.
Below are a couple teaser photos of the prototypes. These are Slash Cut, Double Wall, in Signature Satin

Best Regards,
John Gaydos


Hey john would you.happen to have any prototype pictures of a straight cut /single wall?.
No rush thanks!!
Old 10-08-2020, 05:26 PM
  #326  
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Originally Posted by MEM82
Hey john would you.happen to have any prototype pictures of a straight cut /single wall?.
No rush thanks!!
Not on this car yet, but take a browse through our photos of our 991.2 Carrera (PSE) Tips on our website. There are several of 4in straight cut single wall, and here's a good one


Old 10-08-2020, 08:13 PM
  #327  
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Perfect. Thanks!!
Old 10-08-2020, 08:27 PM
  #328  
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It does sound good with the valves open though.
Old 10-08-2020, 09:27 PM
  #329  
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Originally Posted by Soul Performance
Nope, sorry buddy. The exhaust valves from factory and ours are mechanically actuated via vacuum pressure. Not possible for partial opening, it's either fully open via spring pressure or fully closed via vacuum overwhelming that spring pressure. To convert to electric valves and programming that would be an utter nightmare lol.

Regards,
John
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?

Last edited by Rennolazine; 10-08-2020 at 10:12 PM.
Old 10-09-2020, 01:10 PM
  #330  
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@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)


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