Using the HKS DryCarbon Full Cold Air Intake Kit for your GR SUPRA is easy. First, make sure your engine is cool. Then, carefully remove the old intake system and install the new kit following the included instructions. When installing, ensure all connections are tight to prevent air leaks. As for maintenance, check the air filter regularly. If it gets dirty, clean or replace it according to the filter's maintenance guide. Keep the kit away from water and harsh chemicals. If you notice any strange noises or a decrease in performance, check the kit for any signs of damage.