Just a minute, I didnt want any goofy sounding rice rocket nmoise or anything obnoxious. I like the subtle diesel noise that comes from my car, I dont want to make it louder or anything, I just want the same and for it to be replaced as cheaply and easily as possible. When I meant dual exhaust, I specified it wrong. Im not talking duals liek youd have of an old chevelle ss 454, I mean a single muffler that has two ports going out. Lots of the MB cars have them.
My reasoning in this is that for whatever reason, unlike cars, having a big or huge tailpipe is good for diesel performance apparently. In a gas auto it will limit backpressure and torque will suffer, however for diesel pickups, you can get exhausts with a 4" tailpipe for optimal flow. In this spirit I figured they must put that second pipe onto a muffler for similar reasons, and it must be really good on a diesel, since they sell these systems, and the exhaust on say, a RAM 5.9L diesel is larger in diameter then the mullfler for an 8.0L gas engine.
Maybe Im wrong in this guess, but I certainly arent trying to do somethign tacky or stupid to the car that I very much enjoy driving in. Im not looking to race hondas on friday night and make obnoxious noises...

JMH