Already have a SOUL downpipe on your Porsche 718 Boxster or Cayman and want the ability to change between a catted and catless configuration? SOUL Downpipe Conversion Sections allow owners of an existing SOUL downpipe to swap the center section without purchasing an entirely new downpipe assembly. (soulpp.com)
Two configurations are available. The Competition Catless Section replaces the catalytic converter section with a free-flowing straight-through section for maximum exhaust flow, increased turbo sound, and a more aggressive exhaust character. The Sport High-Flow Catalyst Section converts an existing SOUL downpipe to the catted configuration for owners who want to retain a catalytic converter while maintaining the benefits of SOUL's freer-flowing downpipe design. (soulpp.com)
Each section bolts directly into the existing SOUL downpipe, making it possible to change the vehicle's exhaust configuration without replacing the entire assembly. This makes the conversion sections particularly useful for owners whose requirements change over time or who want an alternate configuration for dedicated track use. (soulpp.com)
IMPORTANT: This product is a conversion section only. It does not include a complete downpipe and is designed exclusively for vehicles already equipped with a compatible SOUL Performance Products downpipe.
Fits 2017–2025 Porsche 718 Boxster and Cayman 2.0L and 2.5L turbocharged models equipped with a SOUL downpipe
Designed for use with SOUL Performance Products downpipes only
Does not replace the complete factory downpipe by itself
Bolts directly into an existing SOUL downpipe assembly
Allows an existing SOUL downpipe to be converted between catted and catless configurations
Competition Catless Section provides a completely unrestricted exhaust path through the conversion section
Sport High-Flow Catalyst Section adds SOUL's high-flow catalytic converter section to an existing compatible SOUL downpipe
Provides an alternative to purchasing an entirely new downpipe when changing configurations
Useful as an alternate track configuration for owners of a compatible SOUL downpipe
Installation is reversible, allowing the alternate SOUL section to be reinstalled later
Backed by SOUL Performance Products' Lifetime Warranty for both street and track use (soulpp.com)
The Competition Catless Section removes the catalytic converter from an existing compatible SOUL downpipe, providing the least restrictive exhaust configuration and increasing turbocharger and exhaust sound.
Removing the catalytic converter can trigger a check engine light. SOUL also notes that the substantial increase in exhaust flow created by a catless downpipe can result in boost spikes on the factory calibration. SOUL highly recommends appropriate ECU tuning for improved drivability and to properly take advantage of the increased exhaust flow. (soulpp.com)
The Sport High-Flow Catalyst Section allows an existing compatible SOUL downpipe to be converted back to a catted configuration without replacing the complete downpipe assembly.
This is the more street-oriented configuration for owners who want to retain a catalytic converter while continuing to use the SOUL downpipe architecture. SOUL identifies the corresponding Sport catalyst conversion section under part number POR.718.SCCS.
The catless Competition Section may trigger a check engine light because the factory catalytic converter is removed.
SOUL highly recommends ECU tuning when using the catless configuration. In addition to catalyst-related fault codes, increased exhaust flow can cause boost spikes on a stock calibration. Proper ECU calibration can improve drivability and allow the engine management system to better accommodate the freer-flowing exhaust configuration. (soulpp.com)
These components are not CARB certified and may not be legal for use on emissions-controlled vehicles. The Competition Catless Section removes the catalytic converter and is intended for off-road or closed-course use where legally permitted.
Customers are responsible for ensuring compliance with all applicable local, state, and federal regulations before installation or use.
The SOUL Competition Downpipe replaces the restrictive factory catalytic converter assembly on the turbocharged Porsche 718 Boxster and Cayman with a completely free-flowing, catless exhaust path. Removing the factory catalyst substantially reduces exhaust restriction, allowing the turbocharger to breathe more freely while increasing throttle response, turbocharger sound, and overall exhaust character.
SOUL uses smooth mandrel-bent piping that transitions from approximately 90 mm at the turbo outlet to dual 55 mm outlets, creating a less restrictive path through one of the most critical sections of the exhaust system. The result is noticeably more turbo sound along with a substantial increase in snarling, crackles, and aggression from the exhaust. SOUL describes the system as aggressive without introducing excessive cabin drone.
The Competition Downpipe also removes significant weight from the rear of the vehicle. At approximately 15.25 lbs, the SOUL assembly is approximately 7.1 lbs lighter than the 22.38-lb factory catalytic converter and downpipe assembly.
Because removing the catalytic converter dramatically increases exhaust flow, SOUL strongly recommends ECU tuning with this downpipe. Increased flow can result in boost spikes on an otherwise stock calibration, and catalyst removal may also trigger a check engine light. Proper ECU calibration can address these issues while allowing the engine to take full advantage of the increased exhaust flow.
Fits 2017–2025 Porsche 718 Boxster and Cayman four-cylinder models, including 2.0L and 2.5L turbocharged applications
Completely catless replacement for the factory catalytic converter and downpipe assembly
Removes one of the primary restrictions in the factory turbocharged exhaust system
Smooth mandrel-bent exhaust path transitions from approximately 90 mm at the turbocharger outlet to dual 55 mm outlets
Designed to improve exhaust flow, throttle response, and turbocharger response
Significantly increases turbocharger sound and overall exhaust character
Adds additional snarling, crackles, and aggression to the exhaust note
Weighs approximately 15.25 lbs / 6.9 kg compared with approximately 22.38 lbs / 10.1 kg for the factory components
Saves approximately 7.1 lbs / 3.2 kg versus the factory catalytic converter assembly
Direct bolt-on installation with no cutting or permanent modification required
Fully reversible installation
Constructed from mandrel-bent, thick-wall T304L stainless steel
Each downpipe is quality-checked and fixture-tested prior to shipment to help ensure accurate fitment
New hardware for the two-bolt exhaust flanges is included
Installation instructions included
Backed by SOUL Performance Products' Lifetime Warranty for both street and track use
SOUL strongly recommends ECU tuning when installing the Competition Downpipe.
Removing the factory catalytic converter creates a major increase in exhaust flow. On an otherwise stock calibration, SOUL notes that this can result in boost spikes, affecting drivability and preventing the vehicle from fully taking advantage of the increased exhaust flow.
Catalyst removal may also trigger a check engine light. An appropriate ECU calibration can address catalyst-related fault codes and optimize engine operation for the freer-flowing exhaust configuration.
The SOUL Competition Downpipe eliminates the catalytic converter entirely for maximum exhaust flow, greater weight reduction, and a substantially more aggressive exhaust and turbo sound.
The SOUL Sport Catalytic Converter Downpipe retains a high-flow catalytic converter and is designed to provide improved flow and performance without requiring ECU tuning or triggering a check engine light on North American vehicles.
For owners prioritizing maximum flow and a more aggressive exhaust configuration—and who plan to properly calibrate the ECU—the Competition Downpipe is the more performance-focused option. For owners who want to retain a catalytic converter and maintain a more straightforward bolt-on configuration, the Sport Catalytic Converter Downpipe is the more street-oriented choice.
This product removes the factory catalytic converter and is not CARB certified. SOUL states that it may not be legal for use on emissions-controlled vehicles and identifies it as intended for off-road use due to removal of the factory catalytic converter.
Customers are responsible for ensuring compliance with all applicable local, state, and federal regulations before installation or use.
The SOUL Sport Catalytic Converter Downpipe replaces the restrictive factory catalytic converter assembly on the turbocharged Porsche 718 Boxster and Cayman with a freer-flowing, high-flow catalytic converter and optimized stainless steel piping. The result is improved throttle response, stronger midrange performance, increased turbo sound, and a more engaging exhaust note without the fumes or check engine light concerns associated with a fully catless downpipe.
SOUL uses smooth mandrel-bent piping that transitions from approximately 90 mm at the turbo outlet to dual 55 mm outlets, helping reduce restriction through one of the most important sections of the exhaust system. Independent Dynojet testing performed by Growler Motor Labs showed repeatable peak gains of 14 wheel horsepower and 24 lb-ft of torque, with especially noticeable improvement through the midrange.
Unlike SOUL's Competition Downpipe, the Sport Catalytic Converter Downpipe retains a high-flow catalyst. SOUL states that the system is designed to provide additional performance and sound without triggering a check engine light and without requiring an ECU tune on North American vehicles.
The Sport Downpipe is also approximately 4.7 lbs lighter than the factory assembly, making it a useful upgrade for owners looking to improve response, sound, and performance while retaining a catalytic converter and a more street-oriented exhaust configuration.
Fits 2017–2025 North American Porsche 718 Boxster and Cayman four-cylinder models, including 2.0L and 2.5L turbocharged applications
Replaces the restrictive factory catalytic converter and downpipe assembly
High-flow catalytic converter provides increased exhaust flow while retaining a catalytic converter
Smooth mandrel-bent exhaust path transitions from approximately 90 mm to dual 55 mm outlets
Independent Dynojet testing showed peak gains of 14 whp and 24 lb-ft of torque
Provides a noticeable improvement in midrange response and drivability
Increases turbocharger sound and overall exhaust character
Designed to provide additional performance and sound without a check engine light
No ECU tune required for normal operation on North American vehicles
Weighs approximately 17.65 lbs / 8.0 kg compared with approximately 22.38 lbs / 10.1 kg for the factory components
Saves approximately 4.7 lbs / 2.1 kg versus the factory catalytic converter assembly
Direct bolt-on installation with no cutting or permanent modification required
Fully reversible installation
Constructed from mandrel-bent, thick-wall T304L stainless steel
Back-purged TIG welded for proper penetration, strength, and long-term durability
Each downpipe is quality-checked and fixture-tested prior to shipment to help ensure proper fitment
New hardware for the two-bolt exhaust flanges is included
Installation instructions included
Backed by SOUL Performance Products' Lifetime Warranty for both street and track use
The SOUL Sport Catalytic Converter Downpipe retains a high-flow catalytic converter and is designed to increase exhaust flow, response, and sound without requiring an ECU tune or triggering a check engine light on North American vehicles.
The SOUL Competition Downpipe removes the catalytic converter entirely for maximum exhaust flow, additional weight reduction, and a more aggressive exhaust note. SOUL strongly recommends ECU tuning with the Competition Downpipe because the large increase in exhaust flow can cause boost spikes, and catalyst removal may trigger a check engine light.
For owners looking for a straightforward performance upgrade while retaining a catalytic converter and factory-like drivability, the Sport Catalytic Converter Downpipe is the more street-oriented option.
The SOUL Valved Exhaust System is designed for Porsche 718 Boxster and Cayman owners who want significantly more exhaust character without sacrificing highway comfort or everyday usability. Rather than simply increasing volume, SOUL developed the system around two distinct exhaust paths, providing a refined muffled path with the valves closed and a freer-flowing 2.5-inch path with the valves open.
With the valves closed, exhaust gases are routed through SOUL's packed mufflers to substantially reduce cabin presence and minimize drone. With the valves open, exhaust gases are allowed to exit through large 2.5-inch piping while the muffler remains acoustically connected to the exhaust path, helping produce a fuller and more robust tone without becoming excessively harsh.
SOUL engineered the system to work equally well with the factory downpipe or a freer-flowing aftermarket downpipe. With additional exhaust modifications, the system delivers increased snarling, crackles, and burbles while the mufflers continue to control unwanted drone throughout the RPM and load range.
For vehicles equipped with factory Porsche Sport Exhaust (PSE), the SOUL system retains factory valve functionality using the existing vacuum controls. Vehicles without PSE use the included SOUL valve controller. The controller can also be used on PSE-equipped cars to provide direct manual control of the exhaust valves independently of Porsche's factory valve strategy.
The result is a versatile exhaust system with two genuinely useful personalities: refined and quiet when desired, and noticeably more aggressive under load with the valves open.
Fits 2017–2025 Porsche 718 Boxster and Cayman four-cylinder models, including 2.0L and 2.5L turbocharged applications
Direct bolt-on replacement for the factory rear exhaust system
Dual-mode valved design provides distinct quiet and aggressive exhaust settings
With the valves closed, exhaust gases are routed through SOUL mufflers packed with durable sound-absorbing material
With the valves open, exhaust gases flow through large 2.5-inch piping for increased volume and a fuller, more aggressive exhaust note
Features 2.5-inch OD over-axle piping
Engineered to minimize undesirable rasp and cabin drone
Designed to work well with either the factory downpipe or an upgraded freer-flowing downpipe
Upgraded downpipes can provide additional exhaust character, including increased snarling, crackles, and burbles
SOUL valve controller kit included
Vehicles without factory Porsche Sport Exhaust require the included controller for exhaust valve operation
PSE-equipped vehicles retain factory valve functionality using the factory vacuum system
Included valve controller can provide full manual valve control on PSE-equipped vehicles
Valve functionality can be controlled using the factory PSE button where equipped, the included controller remotes, or compatible HomeLink buttons
Constructed from mandrel-bent T304L stainless steel tubing
Mufflers feature reinforced casings designed for long-term durability
Each system is quality-checked and fixture-tested prior to shipment to help ensure accurate fitment
Includes installation instructions for straightforward bolt-on installation
Includes SOUL Straight-Cut Single-Wall exhaust tips in Signature Satin
Alternate SOUL tip styles and finishes are available by special request
Backed by SOUL Performance Products' Lifetime Warranty for both street and track use
Designed and manufactured by SOUL Performance Products in Willow Grove, Pennsylvania
Vehicles equipped with factory Porsche Sport Exhaust can retain normal PSE valve operation using the factory vacuum controls. Vehicles without factory PSE use the included SOUL valve controller.
The controller can also be used on PSE-equipped vehicles to provide direct manual control of the exhaust valves rather than relying solely on Porsche's factory valve strategy. Valve operation can be controlled using the supplied remotes and can also be integrated with compatible HomeLink buttons.
This DasMotoring listing includes SOUL Straight-Cut Single-Wall exhaust tips in Signature Satin.
To keep ordering simple, alternate tip finishes and styles are not offered through the standard product options. If you would like a different SOUL tip configuration, contact DasMotoring before ordering and we can confirm availability and pricing.
The SOUL Performance Exhaust uses a fixed, mufflerless design for maximum simplicity, reduced weight, and constant exhaust presence.
The SOUL Valved Exhaust System uses dedicated mufflers and controllable exhaust valves, allowing the driver to substantially reduce exhaust volume when desired. With the valves closed, SOUL describes the system as comparable in cabin volume to factory PSE; under heavy load with the valves open, the system becomes noticeably more aggressive while remaining refined.
For cars with an upgraded downpipe, frequent highway use, or owners concerned about cabin drone, the Valved Exhaust offers significantly greater sound control and flexibility.
The turbocharged Porsche 718 Boxster and Cayman offer impressive performance, but the factory exhaust and extensive sound insulation leave much of the flat-four engine's character hidden from the driver. The SOUL Performance Exhaust replaces the restrictive factory rear exhaust with a lightweight, free-flowing system designed to deliver substantially more sound, turbo character, and engagement on both the street and track.
Unlike a conventional muffled exhaust system, the SOUL Performance Exhaust uses no mufflers or resonators. Exhaust gases flow through 2.5-inch over-axle piping and into a central crossover section, creating a deeper, more aggressive boxer-engine tone with increased turbo noise, bark, and rumble. With an upgraded downpipe, the system becomes considerably more aggressive, with additional crackles and exhaust presence.
SOUL engineered the system for durability as well as sound. Flexible sections in the over-axle piping help isolate engine movement and vibration, while dedicated mounting brackets are used for Manual and PDK cars to improve fitment and reduce unwanted NVH. The complete assembly is constructed from mandrel-bent T304L stainless steel with thick cast flanges and is designed for sustained street and track use.
Fits 2017–2025 Porsche 718 Boxster and Cayman four-cylinder models, including Base, T, S, and turbocharged GTS models
Compatible with both 6-speed Manual and PDK transmissions
Fits both 2.0L and 2.5L turbocharged flat-four engines
Direct bolt-on replacement for the factory rear exhaust system
Mufflerless and resonator-free design provides a substantial increase in exhaust volume and engine character
2.5-inch OD over-axle piping improves exhaust flow through the rear system
Increased turbocharger sound, boxer-engine bark, and exhaust rumble compared with the factory system
Becomes significantly more aggressive when paired with an upgraded downpipe
Weighs approximately 11 lbs less than the factory base exhaust
Weighs approximately 13 lbs less than the factory Porsche Sport Exhaust (PSE) system
Dedicated transmission-specific mounting brackets provide proper fitment for Manual and PDK vehicles
Durable flex sections help accommodate drivetrain movement while reducing transmitted vibration and NVH
Constructed from mandrel-bent T304L stainless steel
Thick cast flanges provide durable exhaust connections
Fixture-tested for accurate fitment prior to shipment
Includes installation hardware and detailed installation instructions
Backed by SOUL Performance Products' Lifetime Warranty for both street and track use
Designed and manufactured in Willow Grove, Pennsylvania
PORSCHE SPORT EXHAUST (PSE)
This Performance Exhaust replaces the factory valved PSE rear exhaust with a fixed, free-flowing exhaust system. Vehicles originally equipped with PSE will no longer have exhaust-valve control after installation. For customers who want to retain selectable quiet/loud exhaust operation, consider the SOUL Valved Exhaust System instead.
TIP CONFIGURATION
This DasMotoring listing includes SOUL Straight-Cut Single-Wall exhaust tips in Signature Satin. To keep ordering simple, alternate tip finishes and styles are not offered through the standard product dropdowns. If you would like a different SOUL tip configuration, contact DasMotoring before ordering and we can confirm availability and pricing.
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