Using your new Remark axleback exhaust is easy. First, make sure your car is turned off and cooled down. Find the OEM or Remark mid Y - pipe under your Subaru WRX or STI from 2015 - 2021. Then, simply bolt the exhaust onto the pipe using the included gaskets and bolts. No complex tools or special skills are required. When it comes to maintenance, regularly check the bolts to ensure they're tight. If you notice any rattling, it might mean a bolt has loosened. Wipe down the exhaust tips with a soft cloth to keep them looking shiny. Avoid using harsh chemicals on the stainless steel, as this can damage the finish. Also, try to park your car in a dry place when possible to prevent rusting. Enjoy the improved power, torque, and sporty sound this exhaust brings to your Subaru!