Thinking of getting a cat back exhaust very soon for my cupra. Been looking at the pipers as I've heard a few good reviews on these but looking on the website it says they come with 0-2 silencers. Am I wrong in thinking that a catback exhaust with 0 silencers is just going to be a straight pipe (no backbox)? It's pretty cheap at £249 + vat but add a silencer and it goes up to over £400 