20-01-2017, 04:47 PM
recently fitted an Audi straight through stainless box in the middle of a no silencer exhaust on a 300 TDi 90, it sounded raspy and a bit shit beforehand, wasn't a big box but its taken most of the rasp out and you can now actually hear the Turbo and it spools up harder low down.
need a part number? http://public.servicebox.peugeot.com/ and http://service.citroen.com/ will sort you out.