Using this Injen cold air intake is straightforward. First, make sure your vehicle is turned off and cooled down. Follow the included instructions to install the intake in your 2004 - 2006 Mitsubishi Lancer Ralliart. Once installed, start your vehicle and enjoy the improved performance. As for maintenance, check the Injen SuperNano - Web dry air filter regularly. If it looks dirty, clean it according to the filter's cleaning guidelines. This will keep the airflow optimal and the engine running smoothly. Be careful not to over - tighten any bolts during installation to avoid damage. And always use the right tools for the job. If you have any issues, refer to the Injen Technology limited Lifetime Warranty for support.