Using this BRZ manifold kit is a great way to upgrade your 2015 - 2021 Subaru WRX. First, make sure you have all the necessary tools. Since the OEM intake manifold and seal rings aren't included, you'll need to source those separately. When installing, use the brackets in the kit to block off the BRZ port injection locations and follow the included hardware instructions. Remember, the kit has different color options for the CNC - machined parts, so choose the one you like. When it comes to tuning, the Street version is compatible with all tuning software on the market, but it's best to have a professional handle it. Also, depending on your AOS and other modifications, you'll need to use different vacuum hoses and fittings. For maintenance, keep an eye on the anodized finish of the parts. If it starts to look dull or damaged, you can consult a professional for advice on how to restore it. Overall, with proper installation and care, this kit will enhance your car's performance for a long time.