Flow Simulations

A lot of R&D work has gone into the design prior to thorough testing.

Part Throttle Flow

The airflow at part throttle passes directly over the fuel injector, ensuring optimal atomization.

Reduced Turbulence

The roller barrel design has far less turbulence in the injector area compared to the butterfly valve.

Full Throttle Performance

At full throttle the air restriction is 20% less compared to conventional ITB's.

Tapered Throttle Body Design

From air horn to cylinder head

We designed these ITB's to extract optimal performance from your air-cooled Porsche 911 engine. The tapered roller barrel design provides several key engineering advantages over conventional throttle body systems.

Key Advantages of Roller Barrel Design:

  • No Butterfly Obstruction: There is no butterfly valve obstructing the airflow to the engine, allowing for unrestricted air delivery.

  • Optimized Diameter: Not having the butterfly in the middle of the airflow allows the diameter of the ITB to be smaller, which gives higher air velocity and thus better filling.

  • Superior Atomization: At partial open throttle, the air is flowing directly over the fuel injector giving excellent atomization of the air-fuel mixture.

  • Fast Response: Fast throttle response due to short distance from barrel to inlet valve.

Construction Excellence

Precision engineering and quality materials ensure long-lasting performance

Precision Manufacturing

Evenly distributed airflow over all throttle bodies due to high precision CNC machining

  • Easy synchronization due to tight tolerances and few joints and connections

  • Robust construction to ensure durable synchronization, avoiding the need for adjustment over time

Quality Components

Throttle barrels mounted in sealed ball bearings for durability and trouble-free operation

  • All sealings with Viton O-rings to prevent false air

  • Only quality bearings and rod-ends used including stainless fasteners

Premium Materials

  • All parts machined from 6082-T6 aluminium, hard anodized gunmetal grey for durability and corrosion resistance

Ready to Upgrade Your Porsche?

Experience the difference that precision engineering and advanced design can make in your air-cooled Porsche 911.

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