Made to increase efficiency. Turbo vehicles would typically have POD type air cleaners, however here at SPOON we decided to develop the cleaner with the genuine airbox. Designed to enhance drivability with its high filling efficiency. Same with earlier released ones for CIVIC FK7 and S660, this filter is also made with polyester fiber. Unlike cotton, this material provides better dust removal and secures the high-level intake. The graph above demonstrates how just changing the filter helped improving the torque and power specifically in the medium to high-speed range. Having just installed the air cleaner with the current ECU settings resulted in significantly better air flow and overall improvement of torque, power and pick up. The filter is easy clean and does not require the filter oil or detergent. Just simply blow the dust off with an air gun. Use mild detergent with water and air dry, if dust cannot be removed with air.