Bought my first WRX about 3 weeks ago. 2018 base. It was used with 49k miles. My first new car after driving a ‘02 sport trac since I was 16 (27 now). Anyways. I don’t really want to do any extreme mods to it. Thought about maybe a blow off valve but not really sure if I can do that on a base model. Anything to look out for in the future as far as Maintenance goes?