Yo, I bought my wrx with a downpipe, decat and a eurosport cat back exhaust. It sounds really nice on idle and low revs, soon as I put my foot down it goes really quiet, I think it may be because the back box is huge, I'm not a massive fan of really loud exhausts but do like a nice rumble :P I'm thinking about switching just the back box but it is all one system from the decat back? What are my best options getting a new cat back exhaust?