Just so many things about an off shelf tune that may or may not “line up” with the setup on your car. Some wear by them, others(like myself) try to steer people towards a more suitable tune. Then in the same breath though, an “ok” of the shelf tune is still better than a shitty custom tune so it’s all a per setup thing.
Not knocking you or your car. Just subarus are known for their quirky sleeve cracking, rod knocking type of motors. Of course I’m not one to talk, bought one here recently(wrx that is) :lol