Using the DC Sports Short Ram Intake System is easy. First, gather all the hardware that comes with the kit. Then, remove the restrictive OEM rubber intake pipe from your 2016 - 2021 Lexus IS200T/300. Install the smooth mandrel - bent aluminum tubing and attach the high - flow air filter. Make sure all connections are secure. When it comes to maintenance, check the air filter regularly. If it looks dirty, clean or replace it as needed. As for precautions, always disconnect the battery before starting the installation to avoid any electrical issues. Also, make sure the engine is cool before you begin working on it.