Using this exhaust turndown is easy. First, make sure your car is a 2016 - 2021 Honda Civic 1.5T. Remove the splash shield before installation. You'll need a PRL front pipe or an aftermarket front pipe to connect it. There's no need to calibrate the ECU. During installation, connect it to the PRL Front Pipe 3 - Bolt connection. Remember, you might have to modify the factory heat shield. As for maintenance, since it's made of 304 stainless steel, it's quite durable. Regularly check the welds and connections for any signs of wear. If you have the optional hardware bag, keep the parts in good condition and use them when necessary.