The Injen RD Series cold air intake for 2003–2004 Mazda Protege Mazdaspeed (2.0L turbo) uses mandrel-bent 6061-T6 aluminum tubing and an Injen SuperNano-Web dry filter to provide improved airflow and filtration. Dyno-proven gains up to 14 hp are cited, and the system is available in polished or black finishes. It includes tubing, filter, hardware and instructions for bolt-on installation.
Injen 03-03.5 Mazdaspeed Protege Turbo Black Cold Air Intake