I've got a GP Active Sport 1.4, and I could do with some suggestions. I really like the look of twin pipe exhaust rather than just a single. However, is it worth my time doing a full performance exhaust system or is the difference I'll notice not really worth the £££…? Will a back box just do the trick, I don't want anything too loud, just more refined[emoji6] What have you guys fitted to yours, any suggestions would be grand!