Using your PLM 3.0 Turbo Inlet Hose with Nozzle is easy. First, gather all the necessary tools. The kit includes all the connectors you need to install it onto your original stock system. Just follow the standard installation process for a turbo inlet hose. When choosing a color, you have the option of RED or BLACK. This product is designed specifically for 2015 - 2021 Subaru WRX with FA20DIT Engine, so make sure your car matches. It won't fit STi models. As for maintenance, keep an eye on the O - ring and the silicone connectors. If you notice any signs of wear or damage, it's a good idea to replace them. The hose is built to last, but regular checks will ensure it keeps performing well. And remember, it comes with a one - year limited warranty, so if you have any issues within that time, you're covered.