Using the Mishimoto intercooler pipe kit is easy. First, make sure your vehicle's engine is cool. Then, carefully remove the old pipes. Install the new pipes in the same position as the old ones, ensuring a snug fit. Use the provided couplers to connect the pipes securely. When tightening the clamps, don't over - tighten as it may damage the pipes or couplers. As for maintenance, regularly check the couplers for any signs of wear or looseness. If you notice any leaks or abnormal sounds, inspect the pipes immediately. Clean the pipes occasionally with a mild soap and water solution to keep them in good condition. Remember, this kit comes with a lifetime warranty, but proper use and maintenance will ensure it serves you well for a long time.