Pro Xe P1 Volvo S40 C30 V50 C70 Stage 2 Hybrid Turbo Upgrade

PRO XE STAGE 2 HYBRID TURBO

The Pro Xe Stage 2 Hybrid Turbo is the highest-flowing K04-based turbocharger we offer for the Volvo P1 T5 (C30, S40, V50, C70) and P3 S60 T5 platforms.

Built for enthusiasts looking to maximize the potential of the factory K04 footprint, the Stage 2 takes our proven Stage 1 package further by addressing the primary limitation of every K04-based turbocharger: turbine-side flow capacity.

While many hybrid turbo builders focus solely on compressor wheel size, the reality is that the turbine housing becomes the dominant restriction at higher airflow levels. As engine RPM and exhaust volume increase, drive pressure rises dramatically. Eventually, exhaust flow begins to overpower the turbine assembly, reducing efficiency and forcing the wastegate open prematurely. This creates excessive backpressure, elevated exhaust gas temperatures, reduced airflow, and ultimately limits horsepower potential regardless of compressor size.

The Pro Xe Stage 2 was developed specifically to combat these issues.

HOW IS IT UPGRADED? WHAT MAKES IT DIFFERENT THAN STAGE 1?

Every Stage 2 Hybrid Turbo starts with our proven Stage 1 foundation and receives additional turbine-side modifications focused on improving high-RPM efficiency and reducing drive pressure. Our Lightweight 9 blade turbine wheel is clipped to allow even more peak flow, as-well as our technicians carefully cut the turbine housing in half to maximize volute porting, enhancing top end potential, and reseal it using high quality welds.

Each unit features:

• Fully machined and ported compressor housing
• Fully machined and aggressively ported turbine housing
• Enlarged turbine volute and throat area
• Maximum wastegate and outlet porting
• Lightweight clipped 9-blade cutback turbine wheel
• Upgraded billet compressor wheel package
• Upgraded journal-bearing CHRA components
• Pro Xe 7 PSI Wastegate Actuator
• Pro Xe Plumb Back CBV

The clipped turbine wheel reduces exhaust restriction at higher shaft speeds, allowing the turbine to process more exhaust flow while reducing backpressure. Combined with extensive turbine housing modifications, the Stage 2 maintains efficiency deeper into the RPM range and produces substantially stronger top-end power than traditional K04 hybrids.

Every turbocharger is VSR balanced to 150,000 RPM and tested prior to shipment.

TURBOCHARGER SPECIFICATIONS

Compressor Wheel

• 11+0 Extended Tip Billet Compressor
• Inducer: 48.5mm
• Exducer: 61.8mm
• Material: 7075-T6 Billet Aluminum

Turbine Wheel

• Clipped 9-Blade Cutback Extended Tip Turbine
• Inducer: 44.5mm
• Exducer: 50.5mm
• Material: High-Temperature Nickel-Chromium Superalloy

Housing Modifications

• Fully Ported Compressor Housing

• Enlarged Turbine Volute
• Enlarged Turbine Throat
• Maximum Wastegate Porting
• Maximum Outlet Porting
• Ported Manifold Runner Transitions
• Smoothed Flow Paths Throughout

Included Components

• Pro Xe 7 PSI Wastegate Actuator
• Pro Xe Plumb Back CBV

FLOW CAPABILITY

• Approximately 40-42+ lb/min
• Efficient Operating Range: 20-30 PSI

POWER POTENTIAL

Supporting modifications and calibration dependent.

93 Octane

•  380+ HP

• 400-440 FT-LBS

E85

• 420-450+ HP
• 470-500+ FT-LBS

WHY STAGE 2?

The factory K04 turbine housing is capable of impressive performance, but once airflow demands exceed a certain point, turbine efficiency becomes the limiting factor.

Many hybrid turbochargers attempt to solve this by installing increasingly larger compressor wheels while leaving the exhaust side largely unchanged. The result is often increased boost pressure without a proportional increase in actual airflow.

The Stage 2 takes the opposite approach.

By improving the turbine housing, turbine wheel, wastegate flow, and exhaust-side efficiency, the turbo is able to process significantly more exhaust energy while generating less backpressure. This allows the engine to breathe more efficiently, lowers exhaust gas temperatures, improves high-RPM airflow, and extends the usable powerband well beyond what a conventional K04 hybrid can achieve.

The result is a turbocharger that continues pulling hard where many K04 hybrids begin to fall off.

WHY PRO XE?

At Pro Xe Automotive, we believe the exhaust side is where power is truly made on the K04 platform.

While many builders advertise increasingly larger compressor wheels, our development focuses on reducing turbine restriction, improving flow balance, and maximizing overall system efficiency.

The Stage 2 represents the furthest evolution of the factory K04 housing while maintaining true bolt-on fitment, factory-style drivability, and exceptional spool characteristics.

For customers seeking the absolute maximum performance possible from a K04-based turbocharger, the Stage 2 is our flagship offering.

RECOMMENDED SUPPORTING MODIFICATIONS

• Custom ECU Calibration
• High-Flow Intercooler
• Upgraded Fuel Injectors
• High-Flow Intake System
• 3” Downpipe Minimum
• Upgraded Fuel Pump
• Block Shims
• Performance Clutch Recommended

COMPATIBILITY

Direct fit for:

• Volvo C30 T5

• Volvo S40 T5
• Volvo V50 T5
• Volvo C70 T5
• Volvo S60 T5

LEAD TIME

Most Stage 2 Hybrid Turbos are built to order.

Typical turnaround time is approximately 4-5 business days. Contact Pro Xe Automotive for current production lead times.