Got it swopped over today. My lcr is decated so before with the resonated section is sounded quite nice, now av put the non resonated on i'm not sure if i like the sound and noise. Its quite a bit louder then a non resonated with a sport cat. I'd say its made it not a sharp and also mpg not as good. Does this make sense? I know ultimatly i need a sports cat but at 560 quid there not cheap.