I’m looking to upgrade my exhaust system, I’m looking for a good sound mostly but if I can get a little more power that would be dope. I was thinking about just getting a muffler, most likely a zzpreformance for about $150. But then I found this page on eBay https://www.ebay.com/sch/i.html?_nkw=cobalt+catback+exhaust . It has full catback systems for about the same price. Just wanted to know if anyone has tried one? Does it sound like a fart cannon? Might it add some power?