Kia Optima 2.0L 4 Cyl. Turbo 2011-On, SP Series Polished Short Ram Intake System (SP1330P) by Injen®. The Short Ram SP Series is a traditional, under hood air intake system that takes the place of your factory airbox and air filter, and the factory air intake tube. The EA Nanofiber air filter allows increased airflow and the aluminum alloy intake tube creates a smooth airflow path into the engine. The increased airflow and velocity results in more power, increased acceleration and better fuel economy. Up to 16 HP and 15 ft.lbs TQ Gain.