I am trying to convince my parents that getting the dual exhaust system (custom fit) will not cause any problems, it will just void the warranty on the exhaust, and that is it. But of course they have their own objections. They have these because before I could drive, I had a gas scooter, and I put an exhaust and other upgrades on it, and it blew up (not literally). So they are scared this will happen to my car. Please give me some reasons why they wont or why they will. Thank you!