CORKSPORT Mazdaspeed 3 - Turbo Inlet Pipe - Stealth Black (Gen-6-463-11003) Mandrel bent aluminum piping: A true high performance turbo inlet pipe that is made from aluminum piping unlike other silicone turbo inlet pipes on the market Avoid unwanted check engine lights: Designed with a downstream recirculation valve fitting to prevent turbulence backwash around MAF sensor and avoid unnecessary check engine lights and stumbling Customize your engine bay:Offered in polished aluminum or powder coated black with blue, red or black silicone to enhance the look of your engine bay. 14% improvement in flow: Replace the restrictive shape of the OEM inlet pipe to improve and smooth airflow resulting in improved boost levels. Compatible: Has been designed to fit seamlessly with the OEM intake as well as OEM and most aftermarket intakes.