Using this Mishimoto intercooler pipe kit is easy. First, make sure your vehicle is turned off and 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 in the same position, ensuring the bead - rolled ends and silicone couplers are properly attached. When driving, keep an eye on the performance of your vehicle. If you notice any strange noises or a drop in performance, it could mean there's an issue with the pipes. For maintenance, regularly check the silicone couplers for signs of wear and tear. If they start to look damaged or brittle, it's time to replace them. Also, clean the pipes occasionally to prevent dirt and debris from building up. And remember, this kit is covered by Mishimoto's lifetime warranty, so if you have any problems, reach out to their support team.