Using the Mishimoto intercooler pipe kit is quite straightforward. First, make sure your vehicle is turned off and has cooled down. Then, carefully remove the old intercooler pipes from your Mitsubishi Lancer Evolution 7/8/9. Next, install the new pipes from the kit, ensuring that the bead - rolled ends are properly connected and the silicone couplers are in place. When it comes to maintenance, regularly check the pipes and couplers for any signs of wear, like cracks or leaks. If you notice any issues, it's best to address them right away. Also, keep the pipes clean to maintain good airflow. Remember, this kit is covered by a lifetime warranty, so if you have any problems, reach out to Mishimoto for support.