As per title. Makes bugger all odds what size the tailpipe is, surely?

Silencer size etc is what dictates sound isnt it, the tailpipe is just a cosmetic thing?

Just its always been one of them internet myths you hear, that a mongoose with a 3in tailpipe sounds different to one with a 4in one etc etc even though it has the same backbox barring the welded on tailpipe, but ive never checked.

So, its it bollocks, or what?