Using your Revel Medallion Touring - S exhaust system is easy. Just install it according to the provided instructions that match your 2007 - 2008 Infiniti G35 or 2008 - 2011 Infiniti G37 Sedan. Once installed, you'll immediately notice the improved sound and performance. When using your vehicle, keep in mind that some applications may not meet the under 93db sound test. As for maintenance, regularly check the connections and welds to make sure they're in good condition. Clean the exhaust with a mild stainless - steel cleaner to keep it looking great. Also, avoid exposing the exhaust to extremely harsh chemicals. If you live in an area with a lot of road salt in winter, rinse the exhaust more often to prevent corrosion. This will help your exhaust last a long time and keep performing at its best.