Using this HKS intercooler pipe kit is straightforward. First, make sure you have the HKS Super SQV4 Kit (P/N 71008 - AN027) as it's required for proper operation. Start by removing the factory intercooler piping from your 2009 - 2021 Nissan GT - R. Then, install the new piping from the kit using the included couplers and clamps. Ensure all connections are tight to prevent any air leaks. As for maintenance, regularly check the clamps to make sure they're still secure. If you notice any signs of damage to the piping, like cracks or dents, replace it right away. Also, keep the piping clean to maintain its performance. With proper use and care, this kit will serve you well throughout your vehicle's life.