Using your Injen cold air intake is easy. First, make sure your engine is off and cooled down. Install the intake following the included instructions. Once installed, start your engine and enjoy the improved performance. When it comes to maintenance, regularly check the Injen SuperNano - Web dry air filter. If it looks dirty, clean it according to the cleaning guide that comes with the filter. This will keep the airflow at its best. As for precautions, avoid driving through deep water as it can damage the intake. Also, make sure all connections are tight during installation to prevent air leaks. If you notice any unusual noises or a drop in performance, check the intake for any signs of damage or loose parts.