For Porsche owners looking to extract substantially more performance from the 4.0L twin-turbocharged V8, the PureTurbos Porsche Cayenne/Panamera 4.0L Turbo Upgrade provides increased airflow and high-boost capability while retaining the factory turbocharger housing.

Designed for compatible Porsche Panamera and Cayenne 4.0L V8 applications, this upgrade combines a billet compressor wheel, high-flow turbine wheel, upgraded CHRA, and precision VSR high-speed balancing to create a significantly more capable turbocharger without moving away from the OEM housing configuration.

With the appropriate ECU calibration, fuel, and supporting modifications, the PureTurbos upgrade is capable of supporting 800+ WHP, making it an effective foundation for high-powered Porsche builds.

Increased Airflow Without an Oversized Turbo Housing

One of the primary advantages of the PureTurbos upgrade is its use of the factory OEM turbocharger housing.

Rather than replacing the complete turbocharger with a larger aftermarket housing, PureTurbos upgrades the internal components to increase the turbocharger's airflow capability while maintaining the original housing configuration.

This approach provides increased performance potential while helping retain a factory-style installation.

Upgraded Billet Compressor Wheel

The upgraded billet compressor wheel is designed to move substantially more air than the factory compressor assembly.

Increased compressor airflow provides the turbocharger with greater capacity to support higher boost pressure and increased engine power, particularly when combined with appropriate ECU tuning and supporting modifications.

For high-output 4.0L V8 builds, the upgraded compressor wheel provides the additional airflow capacity necessary to move beyond the limitations of the factory turbocharger configuration.

High-Flow Turbine Wheel

On the exhaust side, PureTurbos incorporates a high-flow turbine wheel designed to improve exhaust gas flow through the turbocharger.

Efficient turbine flow is critical for high-performance turbocharged applications. By improving the turbine side of the turbocharger, the upgraded assembly is better equipped to manage increased exhaust flow associated with higher boost and power levels.

The combination of the upgraded compressor and turbine wheels creates a more capable overall turbocharger package.

Upgraded CHRA for High-Boost Applications

The PureTurbos upgrade also incorporates an upgraded Center Housing Rotating Assembly (CHRA).

The upgraded CHRA is designed to provide improved durability when operating under the elevated boost pressure and thermal demands associated with high-performance applications.

This makes the turbo upgrade particularly well suited to Porsche owners building vehicles around increased power output rather than simply replacing a factory turbocharger.

VSR High-Speed Balancing

Every upgraded turbocharger benefits from precise rotating assembly balancing, and the PureTurbos unit is VSR high-speed balanced.

High-speed balancing helps minimize unwanted vibration within the rotating assembly, supporting smooth operation and long-term turbocharger reliability.

This additional balancing process is especially important for turbochargers operating at the higher shaft speeds associated with increased airflow and boost pressure.

Capable of Supporting 800+ WHP

The PureTurbos Porsche 4.0L upgrade is capable of supporting 800+ wheel horsepower, although actual results will vary based on the overall vehicle configuration.

Power output depends on several factors, including:

• Fuel quality
• ECU calibration
• Boost pressure
• Engine configuration
• Intake and exhaust modifications
• Intercooling and charge-air management
• Supporting hardware

A properly developed combination of turbochargers, tuning, fuel, and supporting modifications is essential when targeting the upper limits of the turbocharger's capabilities.

Custom ECU Tuning Is Required

A custom ECU calibration is mandatory when installing the PureTurbos upgrade.

The factory calibration is designed around the original turbocharger's airflow characteristics and cannot fully utilize the capabilities of an upgraded turbocharger.

Proper tuning allows the ECU calibration to be optimized around the increased airflow and boost potential of the upgraded turbochargers while helping maintain appropriate engine operating parameters.

Professional tuning and appropriate supporting modifications are strongly recommended.

Factory Housing Configuration

The PureTurbos turbo upgrade retains the OEM turbocharger housing, allowing the upgraded internal components to be packaged within the original turbocharger configuration.

This provides a factory-style installation while substantially increasing the performance capability of the turbocharger assembly.

For Porsche owners who want significant power increases without moving to a completely different turbocharger architecture, this configuration offers an attractive balance between performance and integration.

Refundable Core Deposit

Because PureTurbos uses the factory turbochargers as the foundation for its remanufactured upgrades, customers must provide their original turbocharger assemblies as cores.

There are two available options:

Pay the Core Deposit

Customers can pay the refundable core deposit when ordering the upgraded turbochargers. The deposit is refunded once the original turbocharger cores are returned within 60 days of receiving the upgraded units.

Send Your Cores First

Customers can also send their original turbochargers to PureTurbos before the upgraded units are built, allowing them to avoid paying the core deposit upfront.

Prepare Your Turbocharger Cores Correctly

Before returning the factory turbochargers, all additional accessories and hardware should be removed.

This includes components such as:

• Oil lines
• Coolant lines
• Actuators
• Turbo inlets
• Other attached components

Items received that are not part of the actual turbocharger core may be discarded and cannot be returned.

Designed for High-Performance Porsche Builds

The PureTurbos 4.0L upgrade is designed for Porsche owners pursuing substantial increases in power from the twin-turbocharged V8 platform.

It is particularly suited to builds featuring:

• Custom ECU tuning
• Increased boost pressure
• Upgraded intake systems
• Improved exhaust flow
• Enhanced charge-air cooling
• Performance fuel systems
• High-power street or competition configurations

With the correct supporting combination, the upgraded turbochargers provide the airflow capacity required for serious 4.0L V8 performance.

Vehicle Fitment

Porsche Panamera — 2017–2025

Models:

• Panamera GTS
• Panamera Turbo
• Panamera Turbo S
• Panamera Turbo S E-Hybrid (971)

Engine: 4.0L Twin-Turbocharged V8

Porsche Cayenne & Cayenne Coupe — 2019–2025

Models:

• Cayenne GTS
• Cayenne Turbo
• Cayenne Turbo GT
• Cayenne Turbo S E-Hybrid (9YA)

Engine: 4.0L Twin-Turbocharged V8

Always verify the exact vehicle model, production year, engine, and turbocharger configuration before ordering.

Warranty

PureTurbos backs this Porsche 4.0L turbo upgrade with a Limited 1-Year / Unlimited Mile Warranty.

Warranty coverage is subject to the manufacturer's terms and conditions. Improper use or operation outside the intended application can void warranty coverage.

Off-Road and Competition Use

Performance and upgrade parts of this type are intended for off-road and competition use only where required by applicable laws and regulations.

Customers are responsible for ensuring that their vehicle and modifications comply with all applicable federal, state, and local requirements.

Upgrade Your Porsche 4.0L V8

The PureTurbos Porsche Cayenne/Panamera 4.0L Turbo Upgrade provides a substantial increase in turbocharger airflow capacity while retaining the factory housing configuration. With upgraded billet compressor and high-flow turbine wheels, an upgraded CHRA, and VSR high-speed balancing, it is engineered to support serious high-boost Porsche builds.

For owners targeting 800+ WHP, this turbo upgrade provides the airflow capability to take the 4.0L twin-turbo V8 significantly beyond its factory performance envelope when paired with the appropriate tuning, fuel, and supporting hardware.

Product Link: https://x-ph.com/pureturbos-porsche-cayenne-panamera-4-0l/