SuperNano-Web Dry Air Filter: "That?s massive!" is all you will hear about this SuperNano-Web Dry air filter that is included with the EVO1104 cold air intake system. This filter has been uniquely designed to work with the Injen Twist-Lock System. Using our Twist-Lock technology has allowed our engineers to use the largest filter possible for this application, which increases the available air volume - resulting in added power while keeping the installation process quick and simple., , Quality Hardware: From the Stainless Steel Band Clamps with an inner protective liner to the reinforced automotive grade silicone coupler, every aspect is covered for a perfect and secure fit., , Hassle-Free Installation: Make it easy! The Injen Evolution Air intakes that use our Twist-Lock System have been strategically designed to use fewer parts to provide the end user with one of the quickest and simplest installations available on the market today., , Dyno Proven: Clean and simple, NUMBERS talk! Injen has put in the time and diligence to stand behind our performance data. We put in the time to test and prove that we have developed a superior kit for your BMW. So after hours of designing and dyno testing, Injen is proud to say that the EVO1104 Evolution Air Intake system puts down numbers of up to 7 additional horsepower and 7 Ft.-lbs. of torque.