HOME

Main navigation
Models
911

Expansion intake manifold 911 Turbo Cabriolet

Porsche 911 Turbo Cabriolet - Expansion intake manifold

Expansion intake manifold

More power for less fuel. Sounds paradoxical, but it’s really quite simple. You just have to have the nerve to question the norm.

For instance with the expansion intake manifold in the 911 Turbo models. With a traditional resonance manifold, more air means more power. The compression effect in the intake system is used to press as much of the fuel/air mixture as possible into the cylinders. Unfortunately, compression not only increases air volume, it also increases air temperature. And this has a negative effect on the ignition.

Our expansion manifold turns that principle around. The internal geometry is radically different from that of a resonance intake system. Key modifications include a longer distributor pipe, with a smaller diameter, and shorter intake pipes. As a result, the air is in the expansion phase as it enters the combustion chambers. Since expansion always cools, the air/fuel temperature is lower and ignition is significantly improved – thereby increasing performance.

The amount of air that enters the engine under expansion is less than it would be under compression. To compensate for this, we’ve simply increased the boost pressure. The resulting increase in temperature – again through compression – is immediately offset by the uprated intercoolers.

Instead of hot compressed air entering the combustion chambers, we now have cooler air generating more power and torque. As a consequence, there is a major improvement in engine efficiency. And therefore lower fuel consumption, even under heavy loads and at high revs.

Porsche Expansion intake manifold - Identity 911

Identity 911

Porsche Expansion intake manifold - Exterior

Exterior

Porsche Expansion intake manifold - Interior

Interior

Porsche Expansion intake manifold - Engineering 911

Engineering 911

Porsche Expansion intake manifold - Idea

Idea

Porsche Expansion intake manifold - Engines

Engines

Porsche Expansion intake manifold - Porsche Doppelkupplung (PDK)

Porsche Doppelkupplung (PDK)

Porsche Expansion intake manifold - Porsche Traction Management (PTM)

Porsche Traction Management (PTM)

Porsche Expansion intake manifold - Variable Turbine Geometry (VTG)

Variable Turbine Geometry (VTG)

Porsche Expansion intake manifold - VarioCam Plus System

VarioCam Plus System

Porsche Expansion intake manifold - Expansion intake manifold

Expansion intake manifold

Porsche Expansion intake manifold - Efficiency

Efficiency

Porsche Expansion intake manifold - Coasting

Coasting

Porsche Expansion intake manifold - Sport Button

Sport Button

Porsche Expansion intake manifold - Porsche Torque Vectoring Plus (PTV Plus)

Porsche Torque Vectoring Plus (PTV Plus)

Porsche Expansion intake manifold - Dynamic engine mounts

Dynamic engine mounts

Porsche Expansion intake manifold - Chassis

Chassis

Porsche Expansion intake manifold - Porsche Active Suspension Management (PASM)

Porsche Active Suspension Management (PASM)

Porsche Expansion intake manifold - Rear-axle steering

Rear-axle steering

Porsche Expansion intake manifold - Porsche Dynamic Chassis Control (PDCC)

Porsche Dynamic Chassis Control (PDCC)

Porsche Expansion intake manifold - Wheels and TPM

Wheels and TPM

Porsche Expansion intake manifold - Porsche Active Aerodynamics (PAA)

Porsche Active Aerodynamics (PAA)

Porsche Expansion intake manifold - Porsche Stability Management (PSM)

Porsche Stability Management (PSM)

Porsche Expansion intake manifold - Lights

Lights

Porsche Expansion intake manifold - Brakes

Brakes

Porsche Expansion intake manifold - Engineered body design

Engineered body design

Porsche Expansion intake manifold - Airbags

Airbags

Porsche Expansion intake manifold - Roll-over protection

Roll-over protection

Porsche Expansion intake manifold - Interior

Interior

Porsche Expansion intake manifold - Seats

Seats

Porsche Expansion intake manifold - SportDesign steering wheel

SportDesign steering wheel

Porsche Expansion intake manifold - Assistance Systems

Assistance Systems

Porsche Expansion intake manifold - Instruments

Instruments

Porsche Expansion intake manifold - Luggage compartment

Luggage compartment

Porsche Expansion intake manifold - Additional Features

Additional Features

Porsche Expansion intake manifold - Porsche Communication Management (PCM)

Porsche Communication Management (PCM)

Porsche Expansion intake manifold - BOSE® Surround Sound-System

BOSE® Surround Sound-System

Porsche Expansion intake manifold - Burmester® High-End Surround Sound-System

Burmester® High-End Surround Sound-System

Porsche Expansion intake manifold - Glass slide/tilt sunroof

Glass slide/tilt sunroof

Porsche Expansion intake manifold - Hood

Hood

Porsche Expansion intake manifold - Electric wind deflector

Electric wind deflector

Porsche Expansion intake manifold - Fuel economy and recycling

Fuel economy and recycling

Porsche Expansion intake manifold - Exhaust emission control

Exhaust emission control

Porsche Expansion intake manifold - Fuel

Fuel

Porsche Expansion intake manifold - Noise

Noise