I was working in my engine room the other day and noticed one of my muffler was leaking at the seam. It had spilt where it was seamed together and not only was leaking water but exhaust fumes in to the engine room. We are preparing for a little trip and I thought how lucky I was that it didn't burst underway while on our trip. It could sink the boat. So I started thinking about what I could have done if that happened which leads me to my question. Could you run a correct diameter of ABS pipe in place of a muffler for an emergency fix? Obviousy I'm talking about wet exhaust with plenty of water flowing through it. How obnoxiously loud would it be? I run 871N DD . Anybody had one of these fiberglass mufflers fail on you under way?