Performance Air Intake For Geo Metro (1991-1997) With 1.0L 1.3L 3L Engine BlackSharpen Throttle Response for Your Geo Metro G Series Engine Who Its For: Designed specifically for Geo Metro owners running the Suzuki sourced G Series engine family, including the ultra efficient 1. 0L 3 cylinder and the 1. 3L 4 cylinder variants. The Problem: The factory air box on the Geo Metro was designed for one thing: silence. Unfortunately, that silence comes at the cost of airflow. The stock plastic housing is incredibly restrictive, using a