Hi, i just bought a 2014 ford fiesta ST. it has 19k miles on it and when i went to look at it today i was afraid because it has aftermarket parts on it which i only realized after buying the car. specifically it has a borla catback exhaust and an injen "cold air" intake (i really dont think its taking in cold air if the filter is just sitting in the engine bay out in the open). how much money would i need to change these parts back to stock? of maybe is it even worth it to change them back to stock? what are the risks with driving with these bolt-on parts without an AP or a Protune? should i be afraid???