Using this StopTech brake kit is a great way to improve your Subaru WRX's braking. First, make sure to check the fitment as described in the product description before installation. To install, you simply replace your old brake components with the ones included in the kit. When driving, you'll notice a much better pedal feel and shorter stopping distances. For maintenance, regularly check the brake pads for wear. If they get too thin, it's time to replace them. Also, keep an eye on the brake fluid level and change it according to your vehicle's maintenance schedule. Since the brake pads produce a high level of dust, you might want to clean your wheels more often to keep them looking good. And always remember, if you have any doubts during installation or use, it's a good idea to consult a professional mechanic.