SOUL | 718 GT4/Spyder Exhaust Development
#1351
Rennlist Member
I just want to add here how impressed I am with Soul's customer service. When they say lifetime warranty, they mean it. I had a slight issue on my valved exhaust (genuinely slight) which could not be rectified as I live halfway around the planet from where they are and they went above and beyond to get the situation sorted in a very satisfactory manner.
This kind of integrity is very rare these days. I certainly didn't have the same experience with Cargraphic to name one.
Great vendor.
This kind of integrity is very rare these days. I certainly didn't have the same experience with Cargraphic to name one.
Great vendor.
The following 4 users liked this post by JCviggen:
#1352
Hello Everyone,
.
Exciting new release for us, and not exhaust related. We're had multiple 718 4.0L owners/friends of ours complain of premature clutch wear/slippage both on and off the track, and on modified and unmodified vehicles, most notable on wide open throttle shifting from 2nd to 3rd. Some feedback on this can be found in this thread on Rennlist, it seems to not be an uncommon experience. Given there was not much of a solution to this other than having replacement with factory components to expect a repeat occurrence (981 GT4 aftermarket is not compatible), we did a bit of a deep dive on this and connected with a very well-reputed and experienced Porsche drivetrain development company out of the UK called Ninemeister. They have developed a lightweight flywheel/clutch replacement specific to the 718 4.0L which resolves this clutch slippage, and we are now importing these packages into North America.
Below are some more details, feel free to give me a ring/call anytime to chat a bit more in depth about it and/or to order a kit. If you place an order on our website, be sure to reference my name and Rennlist during checkout and I'll follow up with ETA personally.
.
Ninemeister Flywheel/Clutch Package
https://soulpp.com/product/porsche-7...d-clutch-kits/
.
Best Regards,
John Gaydos
.
.
A dictionary definition of a flywheel is a “mechanical energy storage device” – the heavier the flywheel the more energy the flywheel will store. But more importantly, the lighter the flywheel the less energy (read power) it requires to accelerate it to speed, so for any given engine power, with a lighter flywheel more of that power will end up at the tires to accelerate the car harder in any gear.
.
Lightweight Flywheel Benefits:
.
CNC machined from carbon steel billet
45% reduction in inertia compared to stock dual mass flywheel (13.6 lbs / 6.2kg LWF vs 24.9 lbs / 11.3kg DMF)
Direct replacement
Increases wheel power
Improves acceleration
Improves throttle response
Faster downshifts / rev matching due to faster rpm matching
Spigot bearing and new flywheel bolts are included.
.
Performance Clutch Benefits:
.
Higher thermal capacity compared to OEM friction material
Higher transmittable torque compared to OEM
SACHS Performance pressure plate giving higher transmittable torque and higher clamp load
Capable of over 550Nm torque
Sprung uprated organic center plate with OEM pedal feel
Ideal upgrade for typically fast road/track day cars and everyday use
.
.
NOTES: Slight transmission noise will be present at low rpms due to vibrations from the engine being transmitted to the un-driven gears on the shafts. The reduction in mass equates to less stored energy, so the car will also require more delicate clutch control at low rpm – an acceptable tradeoff for a much more responsive engine.
.
ABOUT NINEMEISTER: Ninemeister is one of the leading independent Porsche specialists in the UK. With a history of the marque from early air-cooled cars to the latest GT models, they specialize in everything from full track cars to routine servicing, engine rebuilds, engine and chassis upgrades.
.
SHIPPING: We usually keep these kits in stock – they usually ship same or next business day. Contact us for expedited orders to ensure proper delivery time.
.
Exciting new release for us, and not exhaust related. We're had multiple 718 4.0L owners/friends of ours complain of premature clutch wear/slippage both on and off the track, and on modified and unmodified vehicles, most notable on wide open throttle shifting from 2nd to 3rd. Some feedback on this can be found in this thread on Rennlist, it seems to not be an uncommon experience. Given there was not much of a solution to this other than having replacement with factory components to expect a repeat occurrence (981 GT4 aftermarket is not compatible), we did a bit of a deep dive on this and connected with a very well-reputed and experienced Porsche drivetrain development company out of the UK called Ninemeister. They have developed a lightweight flywheel/clutch replacement specific to the 718 4.0L which resolves this clutch slippage, and we are now importing these packages into North America.
Below are some more details, feel free to give me a ring/call anytime to chat a bit more in depth about it and/or to order a kit. If you place an order on our website, be sure to reference my name and Rennlist during checkout and I'll follow up with ETA personally.
.
Ninemeister Flywheel/Clutch Package
https://soulpp.com/product/porsche-7...d-clutch-kits/
.
Best Regards,
John Gaydos
.
Product Description
.
.
Within the science of making a car go faster while there is little new to be learned, there are often items which are overlooked. While increasing engine power is the obvious choice of the masses, reducing power lost in the drive train is always an effective way to get something for free which does not compromise the integrity or reliability of the engine. Step forward the lightweight flywheel..
.
.
A dictionary definition of a flywheel is a “mechanical energy storage device” – the heavier the flywheel the more energy the flywheel will store. But more importantly, the lighter the flywheel the less energy (read power) it requires to accelerate it to speed, so for any given engine power, with a lighter flywheel more of that power will end up at the tires to accelerate the car harder in any gear.
.
Lightweight Flywheel Benefits:
.
CNC machined from carbon steel billet
45% reduction in inertia compared to stock dual mass flywheel (13.6 lbs / 6.2kg LWF vs 24.9 lbs / 11.3kg DMF)
Direct replacement
Increases wheel power
Improves acceleration
Improves throttle response
Faster downshifts / rev matching due to faster rpm matching
Spigot bearing and new flywheel bolts are included.
.
Performance Clutch Benefits:
.
Higher thermal capacity compared to OEM friction material
Higher transmittable torque compared to OEM
SACHS Performance pressure plate giving higher transmittable torque and higher clamp load
Capable of over 550Nm torque
Sprung uprated organic center plate with OEM pedal feel
Ideal upgrade for typically fast road/track day cars and everyday use
.
NOTES: Slight transmission noise will be present at low rpms due to vibrations from the engine being transmitted to the un-driven gears on the shafts. The reduction in mass equates to less stored energy, so the car will also require more delicate clutch control at low rpm – an acceptable tradeoff for a much more responsive engine.
.
ABOUT NINEMEISTER: Ninemeister is one of the leading independent Porsche specialists in the UK. With a history of the marque from early air-cooled cars to the latest GT models, they specialize in everything from full track cars to routine servicing, engine rebuilds, engine and chassis upgrades.
.
SHIPPING: We usually keep these kits in stock – they usually ship same or next business day. Contact us for expedited orders to ensure proper delivery time.
but since clutch product is from an other brand
would love to hear a user experience about these clutch's as it will be hard to make a better one than oem modern porschs.
i will get a set if there were some people who tried them for a while.
The following users liked this post:
Soul Performance (04-01-2022)
#1353
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Thread Starter
I trust that Soul has great respect and integrity
but since clutch product is from an other brand
would love to hear a user experience about these clutch's as it will be hard to make a better one than oem modern porschs.
i will get a set if there were some people who tried them for a while.
but since clutch product is from an other brand
would love to hear a user experience about these clutch's as it will be hard to make a better one than oem modern porschs.
i will get a set if there were some people who tried them for a while.
Keep in mind that Porsche does an amazing job sourcing their OEM components, and that's the quality you will find here with the Sachs friction discs.
Dave @ SOUL
__________________
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
#1354
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Thread Starter
I just want to add here how impressed I am with Soul's customer service. When they say lifetime warranty, they mean it. I had a slight issue on my valved exhaust (genuinely slight) which could not be rectified as I live halfway around the planet from where they are and they went above and beyond to get the situation sorted in a very satisfactory manner.
This kind of integrity is very rare these days. I certainly didn't have the same experience with Cargraphic to name one.
Great vendor.
This kind of integrity is very rare these days. I certainly didn't have the same experience with Cargraphic to name one.
Great vendor.
Regards,
John Gaydos
The following users liked this post:
JCviggen (04-06-2022)
#1355
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Thread Starter
New Product Release: Resonated Over Axle Pipes
.By popular demand we’ve continued working with the community on developing an additional product for the 718 4.0L platform. As a standalone modification there are those that want the performance improvement of ditching the particulate filters, but without the larger delta of sound level increase with valves open provided by standard non-resonated over axle pipes. We’ve also found the factory over axle pipes to be a contributor to cabin presence at low rpms with aftermarket rear systems. While adding standard over pipes has shown to reduce the cabin presence of PSE replacements, it also significantly amplifies the overall sound level. We felt we could reduce that cabin presence even further while providing a more modest increase to the volume of existing muffler replacements or header upgrades. The resulting product addition…Resonated Over Axle Pipes.
We sent a set of these out to an active RL member running just our Valved Exhaust System to do a back-to-back-to-back comparisons with factory OAPs, standard non-resonated OAPs, and then resonated OAPs. It was successful, and he should be chiming in with his independent feedback shortly : )
.
Driving Impressions Compared to Non-Resonated Over Axle Pipes
.
- More modest and subtle change to volume and tone, especially as a standalone modification.
- Same performance benefits by uncorking the particulate filter and using a free flowing straight through style resonator.
- Smoother transition (less delta of sound level) between closed and open on valved exhaust systems.
- Helps reduce low rpm cabin presence with a more refined/smoother tone, and less sharpness/intensity to burbles/pops/overrun when combined with other aftermarket exhaust sections.
- 9.4lbs lighter than factory OAPs
If you’d like to order a set please feel free to use the website and reference Rennlist and my name during checkout, I’ll be sure to oversee your order and be available for updates as you move through the production queue. Don't hesitate to text/call at 484-883-6197 or shoot me an email to johng@soulpp.com to discuss your goals and the exhaust configurations in more depth.
.
Regards,
John Gaydos
.
#1356
Rennlist Member
Nice! More modular options.
#1357
Racer
I have some first hand experience to share with these new resonated OAPs when combined with the Valved Rear System. I’m very happy with this combination for my taste.
I was after a little less cabin resonance and a more street friendly sound level. The Resonators do help control cabin boom/resonance, the impact is small yet noticeable back-to-back. I find they also help control overall tone and volume. If you are familiar with the tone of the valved rear system with standard OAPs, throaty, gurgles, and some crackles. These resonators certainly dampen some of that and yield a slightly higher pitch in overall tone, I feel the right amount. Sound is subjective, for my personal taste, I think without the resonators the outside sound is just at the line or slightly over for a street setup. With the resonators, I find it perfect, just rowdy enough but slightly refined. On a 1-10 rowdy scale, rear box only is a 4, rear + resonated OAPs is 6-7, and rear + OAPs is 8.
I also tried to capture the difference in cabin resonance graphically with a 1-10 scale, the resonators lower the bass around 125 Hz across the RPM band which I think helps the tone and obviously helps keep the resonance in the cabin slightly lower. My subjective ratings are as follows across the area of concern inside the cabin at low RPM with load. V/O is Valves forced open, V/C is factory valves closed operation.
More to follow but this combo is a keeper.
I was after a little less cabin resonance and a more street friendly sound level. The Resonators do help control cabin boom/resonance, the impact is small yet noticeable back-to-back. I find they also help control overall tone and volume. If you are familiar with the tone of the valved rear system with standard OAPs, throaty, gurgles, and some crackles. These resonators certainly dampen some of that and yield a slightly higher pitch in overall tone, I feel the right amount. Sound is subjective, for my personal taste, I think without the resonators the outside sound is just at the line or slightly over for a street setup. With the resonators, I find it perfect, just rowdy enough but slightly refined. On a 1-10 rowdy scale, rear box only is a 4, rear + resonated OAPs is 6-7, and rear + OAPs is 8.
I also tried to capture the difference in cabin resonance graphically with a 1-10 scale, the resonators lower the bass around 125 Hz across the RPM band which I think helps the tone and obviously helps keep the resonance in the cabin slightly lower. My subjective ratings are as follows across the area of concern inside the cabin at low RPM with load. V/O is Valves forced open, V/C is factory valves closed operation.
More to follow but this combo is a keeper.
Last edited by Josh_357; 04-05-2022 at 08:43 PM.
The following 4 users liked this post by Josh_357:
#1358
Rennlist Member
Join Date: Nov 2016
Location: Waterloo, Ontario, Canada
Posts: 1,524
Received 826 Likes
on
453 Posts
I have some first hand experience to share with these new resonated OAPs when combined with the Valved Rear System. I’m very happy with this combination for my taste.
I was after a little less cabin resonance and a more street friendly sound level. The Resonators do help control cabin boom/resonance, the impact is small yet noticeable back-to-back. I find they also help control overall tone and volume. If you are familiar with the tone of the valved rear system with standard OAPs, throaty, gurgles, and some crackles. These resonators certainly dampen some of that and yield a slightly higher pitch in overall tone, I feel the right amount. Sound is subjective, for my personal taste, I think without the resonators the outside sound is just at the line or slightly over for a street setup. With the resonators, I find it perfect, just rowdy enough but slightly refined. On a 1-10 rowdy scale, rear box only is a 4, rear + resonated OAPs is 6-7, and rear + OAPs is 8.
I was after a little less cabin resonance and a more street friendly sound level. The Resonators do help control cabin boom/resonance, the impact is small yet noticeable back-to-back. I find they also help control overall tone and volume. If you are familiar with the tone of the valved rear system with standard OAPs, throaty, gurgles, and some crackles. These resonators certainly dampen some of that and yield a slightly higher pitch in overall tone, I feel the right amount. Sound is subjective, for my personal taste, I think without the resonators the outside sound is just at the line or slightly over for a street setup. With the resonators, I find it perfect, just rowdy enough but slightly refined. On a 1-10 rowdy scale, rear box only is a 4, rear + resonated OAPs is 6-7, and rear + OAPs is 8.
#1359
Racer
See my edited post. Valves open is very good drone wise, valves closed is the best I've heard with any aftermarket combo I've tested. Nothing will ever be as quiet as factory valves closed, aka no sound
The following users liked this post:
wizee (04-05-2022)
#1360
Rennlist Member
Join Date: Nov 2016
Location: Waterloo, Ontario, Canada
Posts: 1,524
Received 826 Likes
on
453 Posts
Excellent, sounds like exactly what I’ve been looking for. I’m tempted to keep factory PSE operation mainly because I don’t like adding extra modules, and don’t want to tune while under warranty, but I want a smooth transition from valves open to valves closed. I want valves closed to be louder and have more character and tone than stock while still being pleasant and not obtrusive for sixth gear highway cruising, and I want valves open to have a better and higher pitched tone than stock without being too much louder. I also would like the weight savings and flow improvements of ditching the particulate filters. It sounds like this setup should achieve all that.
#1361
Are these offered with heat shield coating?
#1362
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Thread Starter
All over axle pipes our ours can be sent out to Jet Hot Ceramic coating direct from our facility and have every millimeter coated in 1300-2500 rated ceramic coating, our favorite heat solution. We can even do different finish colors if you want to be unique. Not that all this is necessary, that topics been beat to death in this thread as I'm sure you've seen haha. But we like giving our customers options, we cater to the individual as best we can
Regards,
John Gaydos
Regards,
John Gaydos
Last edited by Soul Performance; 04-05-2022 at 07:44 PM.
The following users liked this post:
Larry Cable (04-21-2022)
#1363
A video with the complete setup would be perfect!
200cpsi cats + resonated OAP + valved exhaust
Camera inside and outside the car; just like the video you uploaded on YouTube with your 200cpsi cats
And stock dyno and after dyno; I think sound will be perfect and numbers will help sell this complete setup
200cpsi cats + resonated OAP + valved exhaust
Camera inside and outside the car; just like the video you uploaded on YouTube with your 200cpsi cats
And stock dyno and after dyno; I think sound will be perfect and numbers will help sell this complete setup
Last edited by 964C4; 04-05-2022 at 09:18 PM.
The following users liked this post:
Jim Rockford (11-24-2023)
#1364
Rennlist Member
Join Date: Nov 2016
Location: Waterloo, Ontario, Canada
Posts: 1,524
Received 826 Likes
on
453 Posts
New Product Release: Resonated Over Axle Pipes
.By popular demand we’ve continued working with the community on developing an additional product for the 718 4.0L platform. As a standalone modification there are those that want the performance improvement of ditching the particulate filters, but without the larger delta of sound level increase with valves open provided by standard non-resonated over axle pipes. We’ve also found the factory over axle pipes to be a contributor to cabin presence at low rpms with aftermarket rear systems. While adding standard over pipes has shown to reduce the cabin presence of PSE replacements, it also significantly amplifies the overall sound level. We felt we could reduce that cabin presence even further while providing a more modest increase to the volume of existing muffler replacements or header upgrades. The resulting product addition…Resonated Over Axle Pipes.
We sent a set of these out to an active RL member running just our Valved Exhaust System to do a back-to-back-to-back comparisons with factory OAPs, standard non-resonated OAPs, and then resonated OAPs. It was successful, and he should be chiming in with his independent feedback shortly : )
.
Driving Impressions Compared to Non-Resonated Over Axle Pipes
.
- More modest and subtle change to volume and tone, especially as a standalone modification.
- Same performance benefits by uncorking the particulate filter and using a free flowing straight through style resonator.
- Smoother transition (less delta of sound level) between closed and open on valved exhaust systems.
- Helps reduce low rpm cabin presence with a more refined/smoother tone, and less sharpness/intensity to burbles/pops/overrun when combined with other aftermarket exhaust sections.
- 9.4lbs lighter than factory OAPs
If you’d like to order a set please feel free to use the website and reference Rennlist and my name during checkout, I’ll be sure to oversee your order and be available for updates as you move through the production queue. Don't hesitate to text/call at 484-883-6197 or shoot me an email to johng@soulpp.com to discuss your goals and the exhaust configurations in more depth.
.
Regards,
John Gaydos
.
This sounds like a very interesting setup. Saves weight and improves flow over stock OAPs, gives nicer tone than the stock filtered setup, while still maintaining a smoother transition from valves open to closed, and cutting down on drone frequencies.
The following users liked this post:
Larry Cable (04-21-2022)
#1365
Racer
How much clearance is there between the resonators and surrounding body of the car and other components? I know the area around the bend is a fairly fit (with the stock pipe too), and there’s more room as you get closer to the muffler area.
This sounds like a very interesting setup. Saves weight and improves flow over stock OAPs, gives nicer tone than the stock filtered setup, while still maintaining a smoother transition from valves open to closed, and cutting down on drone frequencies.
This sounds like a very interesting setup. Saves weight and improves flow over stock OAPs, gives nicer tone than the stock filtered setup, while still maintaining a smoother transition from valves open to closed, and cutting down on drone frequencies.