Compressive Tuning’s ever expanding product line now includes the new STI Louver covers for the STI models. Similar to the Diamond covers, our louver covers are a show stopping pulley cover designed with a 3 dimensional look in mind. The louver covers feature 3 aggressive slats below a precision laser cut diamond piece with the Compressive Tuning logo centered over the top. Contrary to the traditional flat piece pulley covers, Compressive Tuning aims to give the STI engine bay a more dynamic, and aggressive look by utilizing sharp angles and precise vented placements throughout the piece.