Using the Mishimoto Blue Upper Intercooler Pipe Kit for your Mitsubishi Lancer Evolution 7/8/9 is straightforward. First, make sure your vehicle is turned off and cooled down. Remove the old intercooler pipes carefully following your car's service manual. Then, install the new pipes in the same position, ensuring a tight fit and connecting the silicone couplers properly. As for maintenance, check the pipes and couplers regularly for any signs of wear or damage, like cracks or leaks. If you notice any issues, replace the parts as needed. When cleaning, use a mild soap and water solution to gently clean the pipes and dry them thoroughly. Keep in mind that this kit is designed for high - performance use, so avoid over - stressing the system beyond its capabilities. With proper use and maintenance, your intercooler pipe kit will serve you well for a long time.