Injen Tuned Air Intake System

Injen’s Tuned Air Intake system for the Audi S4 is one of the first tuned air intake systems available on the market. It has a SuperWeb Nanon dry filter that improves airflow to the car’s engine to provide gains in horsepower, throttle response and torque. The MR technology is a patented tuning process that keeps air/fuel ratios within OE tolerances.