Using this exhaust is easy. First, gather all the parts from the box. Start by attaching the front pipe with the resonator box to the appropriate place on your Nissan 350Z. Then, connect the 3 - inch rear section with dual tips to the front part. Use the provided gaskets, bolts, and nuts to secure everything tightly. Remember, this exhaust is designed for off - road use only, so don't use it on public roads. As for maintenance, regularly check the bolts and nuts to make sure they are tight. You can clean the brushed finish and polished tips with a mild automotive cleaner to keep them looking good. And don't forget, you'll need to perform a 'bumper tuck' before installing to avoid any clearance issues.