1.8 LITER. Air duct. A pipe that transfers compressed air to from the turbo or super charger to the intercooler. A tube which supplies air from the turbocharger to the intake manifold. AIR DUCT. Air tube. Connector pipe. Front hose. FRONT PIPE. Front PRESSURE hose. Hose AND AMPLIFIER; tube ASSEMBLY. Intercooler Pipe. Pressure tube. Turbocharger Outlet Tube. Vacuum hose.