The Funk Motorsport Subaru WRX Turbo Blanket is made from the highest quality materials and are available for all turbo applications. The BMW Turbo Blanket is specific to the Subaru engine featured on the WRX. This blanket is specific to the subaru WRX turbo. This turbo jacket has been produced to accommodate the complex shape of the TD04 / TD05 WRX turbo. Usually found on 2002-2013 Subaru Impreza Models. Will fit models; vf22 vf34, vf48, 16g, 18g Due to the close proximity between the two halves of the turbo, it is extremely common for heat sink to occur. This can decrease performance output while increasing the work of the input components during the combustion cycle. Funk Motorsport Turbo blankets are designed to keep the hot side of your turbo insulated while keeping the cold side at optimum temperatures. This helps to provide cooler airflow to the cooling system and MAF sensor, leading to an increased ignition spark and higher output of energy from combustion. By ensuring that the turbine sector of the turbo remains hot, less heat will be dissipated into the engine bay, ensuring that exhaust gases will flow with less turbulence from the exhaust. See this in action in our video section! Why is heat management so important? Find out here.