x-pipe in my Labree system just to reduce the noise. Even with the turbos and mufflers, a non-cat converter having car can be obnoxiously loud under acceleration. It may sound great at idle but the unwarranted attention from law enforcement and hyper-sensitive neighbors is not worth it when you are not breaking the law to begin with. Now I have a nice rumble at idle and it has a good growl under acceleration and I still think it's still a little too loud. I guess I am getting old;)