Using the Tomioka TD06 - 20G Turbocharger is easy. First, make sure your engine internals are upgraded as recommended. Then, use the included hardware kits, gaskets, oil pipe, and water pipe to install the turbocharger and actuator onto your Subaru WRX, Legacy GT, or Forester SH5/9. For racing, this turbo can handle up to 420 HP, giving you a great performance boost. When it comes to maintenance, regularly check the oil and water pipes for any leaks. Also, keep an eye on the actuator to ensure it's working properly. If you notice any issues, it's best to consult a professional mechanic.