Using your ETS GESI J - Pipe is easy. Just replace your old pipe with this direct factory replacement. Make sure to use the new studs and nuts provided. When it comes to maintenance, keep an eye on the exhaust system regularly. Check for any signs of damage or leaks. Since it's made of high - quality 304 stainless steel, it's durable, but extreme conditions can still affect it. If you notice a change in the exhaust note or performance, it might be time for a closer inspection. Remember, we can't guarantee that there won't be a check engine light with this product. If the light comes on, you may need to take your vehicle to a professional to diagnose the issue.