Using the Injen SP2300 cold air intake is straightforward. First, make sure your engine is cool. Locate the original intake system and carefully remove it following the manufacturer's instructions. Then, install the Injen intake by attaching the large 4.0' aluminum intake tube to the appropriate places. Connect all the hoses and clamps securely. When it comes to maintenance, regularly check the intake tube for any signs of damage or dirt. You can clean the intake with a mild cleaner and a soft cloth. Also, keep an eye on the air filter. Replace it when it gets dirty or clogged. As for safety, always follow basic automotive safety procedures when working on your vehicle. If you're not sure about any step, it's best to consult a professional mechanic.