Well, it's a long story that I won't detail, but the short version is that the original muffler on my B5 had a cracked weld, so when it was in the shop for other warranty work they replaced it with the EFI silencer.
I rode it to work 5 times after I got it back, about 350 miles, but Friday morning on the way in the new muffler fell off. The service manager thinks that it's somehow my fault, because he doesn't see how two bolts on the hangers plus the clamp could have all come off without my noticing before the final failure.
I agree that it's bizarre, but regardless, if it had been properly secured this wouldn't have happened.
The question I have is whether the EFI muffler actually uses both mounting points, or if it has only one hanger. Do any of you with that muffler know? Not that it matters, but it could explain how it happened so easily.