| if you know a muffler guy, you can get a cat back fabricated for a 100-200.. magnaflow cats are really good and are cheap($50-$80 each, dont buy into bmw purists idea that only bmw cats are any good.. they know nothing) and the muffler is really up to you what you buy.
flowmaster,magnaflow, AA, dinan, IE, remus, Corsa, B&B, etc, etc.. so many choices.. if you want cheap, and if loud isnt a problem, a flowmaster 40 series are cheap ($50), but its loud. not ricer loud, big block loud.
i went with a magnaflow 3" cat and magnaflow muffler for my 325i.
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