N54 Dual Cone Intakes BMW 135i/335i E82/E90/E92Replace your restrictive factory intake system with the Performance Intake Kit featuring the highest quality filters available on the market. The inverted S&B intake filters greatly increase flow in the mid to upper RPM range while introducing a more aggressive engine note. Gains of up to 20 horsepower can be realized by replacing the restrictive factory intake with this bolt on kit. We include everything needed to replace the factory intake system.