Performance Increase: 9 HP, 9 ft-lbs peak, 15 HP 18 ft-lbs below 4,000 rpm
Here is our updated Carbon Turbo Tube for the FK2, which now has even greater volume, allowing the turbo to operate with even less restriction and thus unleashing even more power. Our turbo tube was designed with these 3 key objectives:
1) VOLUME: Inlet Diameters: Eventuri 78 mm at the intake end, increasing to 88 mm from the stock 63 mm. Starting at the intake system connection, we matched the MAF tube diameter and now increases to 88 mm across the main section of the tube, resulting in a 96% increase in cross-sectional area over the OEM tube. Clearly, with a significantly larger internal diameter, the Eventuri tube encapsulates a much larger internal volume that de-restricts the flow path to the turbo. This allows the turbo to operate more efficiently and reach peak power levels more quickly. It also allows the turbo to operate at maximum power with lower turbine load.
2) FLOW QUALITY: Having only a large internal volume isn’t a good thing if the flow path doesn’t also allow for smooth airflow to the turbo. By using high-temperature pre-preg carbon fiber, we were able to achieve a smooth internal surface. In contrast, the stock inlet pipe is made of cast aluminum that ends up with a rough internal surface. This, combined with the smooth curvature of the elbow, results in a flow path that minimizes turbulence.
3) TEMPERATURE: The final criterion was to minimize heat conduction in the airflow. The stock inlet is directly connected to the turbo and therefore conducts heat immediately when the turbo starts up. Our system uses a machined flange that connects to the turbo and then a silicone joint with an integrated heat spacer to prevent the carbon elbow from having direct contact with the turbo. This barrier, combined with the low thermal conductivity of carbon fiber, results in lower heat transfer to the airflow.
This turbo pipe was designed to fit our FK2 intake system with a carbon fiber MAF pipe.