SOUL | 718 GT4/Spyder Exhaust Development
#76
Thanks for asking! Great question, though that is not quite accurate. Remember even with valves open you still have partial flow going through that top flow path into the muffler. We deleted the PFs and I drove that car quite a bit, I would not say it is too loud at all and still has excellent sound/tone.
Best Regards,
John Gaydos
Best Regards,
John Gaydos
The following users liked this post:
alexk79 (06-13-2020)
#77
Thread Starter
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Joined: Jun 2017
Posts: 4,108
Likes: 1,917
From: Willow Grove, PA
Race Exhaust Update
.
That said, some of you may ask... what about the track rats? What about those of us that live in the high rpms and want to hear this car working and maximize the driver’s connection? Those that are in the minority, that don’t value cruising speed comfort as much as weight loss and maximizing flow/sound characteristics. We thought about you too, and this is what we’ve come up with for our Race Exhaust, which can bolt right up to the factory headers or our race/street headers.
The factory dual exit/entry flanges connecting the over axle pipes to the PSE muffler limit the piping diameter to 2.25” - we’ve eliminated those. Our system is full 2.5” all the way as we’ve eliminated the factory over axle pipe to PSE muffler connection. We’re using an X-Pipe to accommodate resonated and non-resonated options. The longer piping routing also helps noticeably smoothen out the exhaust sound while the slight blending of the X gives the car a higher pitched sound more akin to the previous 981 generation we’ve come to know and love. The resonated version sheds 29lbs while the non-resonated variant drops 32.3lbs. The bend profiles are being 3D scanned and our mandrel-bent versions will eliminate a dozen welds from the design. Like all of our products, it is fabricated from T304L stainless steel and back purged with argon gas for maximum longevity under sustained high rpm abuse, and is backed with our Lifetime Warranty for street and track use.
Costing/Pricing is being determined as we speak for all products! Please feel free to text/call me at 4848836197 (14848836197 via Whatsapp) or shoot me an email at johng@soulpp.com to discuss pricing and preorders.
Enjoy the teaser photos and video
Best regards,
John Gaydos
__________________
SOUL PERFORMANCE PRODUCTS
Quality Exhaust Solutions, Fair Pricing, and Outstanding Service
John Gaydos- Owner, Performance Specialist
Cell - (484) 883-6197
johng@soulpp.com
Jon Wheel - Marketing Manager
jwheel@soulpp.com
SOUL PERFORMANCE PRODUCTS
Quality Exhaust Solutions, Fair Pricing, and Outstanding Service
John Gaydos- Owner, Performance Specialist
Cell - (484) 883-6197
johng@soulpp.com
Jon Wheel - Marketing Manager
jwheel@soulpp.com
Last edited by Soul Performance; 07-23-2020 at 11:11 AM.
#81
RL Community Team
Rennlist Member
Rennlist Member
Joined: Dec 2019
Posts: 9,292
Likes: 4,801
From: Victoria, BC, Canada
Incredible sound but for me just a little too intense, sure sometimes I would like it to sound like that, but not for just cruising around and trying to go unnoticed.
Hopefully the valved exhaust will be profiled soon?
And what about the over axel pipes and heat shielding?
Hopefully the valved exhaust will be profiled soon?
And what about the over axel pipes and heat shielding?
#82
Can't say as I agree about the 981 being high pitched, but this setup is sounding a heck of a lot more like what was good about the 981. It's got back that blat characteristic that was so good in the 981. Well done, I didn't know if this was possible, appears it is.
The following 3 users liked this post by 4MIDABLE:
#84
Thread Starter
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Joined: Jun 2017
Posts: 4,108
Likes: 1,917
From: Willow Grove, PA
Incredible sound but for me just a little too intense, sure sometimes I would like it to sound like that, but not for just cruising around and trying to go unnoticed.
Hopefully the valved exhaust will be profiled soon?
And what about the over axel pipes and heat shielding?
Hopefully the valved exhaust will be profiled soon?
And what about the over axel pipes and heat shielding?
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 inside and outside of the pipes coated in their entirety, which would provide better thermal retention characteristics vs a heat shield covering a portion of the exhaust.
Best regards,
John Gaydos
The following users liked this post:
tigerhonaker (06-15-2022)
#85
Thread Starter
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Joined: Jun 2017
Posts: 4,108
Likes: 1,917
From: Willow Grove, PA
Can't say as I agree about the 981 being high pitched, but this setup is sounding a heck of a lot more like what was good about the 981. It's got back that blat characteristic that was so good in the 981. Well done, I didn't know if this was possible, appears it is.
Regards,
John Gaydos
#88
Thread Starter
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Joined: Jun 2017
Posts: 4,108
Likes: 1,917
From: Willow Grove, PA
Valved Rear Exhaust System Update
.In regards to this topic in particular...The PSE muffler is Very well designed, check out the explanation video below of how. If you want an exceptional valved exhaust system while at the same time uncorking the main performance restrictions on the car, you should strongly consider simply freeing up the flow upstream of the PSE muffler with our competition over axles pipes and perhaps a combination of our headers. If headers and over axles pipes are not something you can do due to stringent emissions restrictions, we are working on a valved rear exhaust solution.
.
The first step was to 3D print a muffler shell to accommodate the spacial requirements on the car. Once this was done, we utilized a chambered x-pipe internal design based off of an extraordinary successful venture designing a one off valved exhaust system for Larry of AMMO NYC's Audi R8. The video of that project is below and its a great watch if you want to check out the whole thing. However, you'll see the muffler design in detail from 3:00-4:30. I've also included some photos below of our rendition of this muffler specifically for the GT4/Spyder/GTS. Due to the complexity of this design and how labor intensive they are, we are having our mufflers made to our exact specifications in a large number by one of the fabrication facilities we partner with. This way we will have them readily available on the shelf to reduce the lead time of getting them in your hands dramatically. We will keep you up to date as this progresses
Best regards,
John Gaydos
Don't want to watch the whole video? Skip to 3:00-4:30 for our muffler design
The following users liked this post:
UncleDude (05-28-2021)
#89
RL Community Team
Rennlist Member
Rennlist Member
Joined: Dec 2019
Posts: 9,292
Likes: 4,801
From: Victoria, BC, Canada
@Soul Performance thanks for sharing the story about the R8, that change between valve's open and closed is perfect, looking forward to something like this. My hope was to go with stock headers, GPF delete pipes and valved exhaust.
Staying tuned!
Staying tuned!
#90
@Soul Performance thanks for sharing the story about the R8, that change between valve's open and closed is perfect, looking forward to something like this. My hope was to go with stock headers, GPF delete pipes and valved exhaust.
Staying tuned!
Staying tuned!
The following users liked this post:
Westcoast (06-19-2020)