I've got the same renus set up as shown above. It is perfect. Just as stinky describes....... I've since fitted a sports cat too with no increase in noise. Sound is perfect, on idle you can tell it is not a standard system but it is just a rumble. I often drive 600 mile round trips to Devon and cornwall for rock climbing and on these trips the sound is just in the background not in yer face at all.
So go for it you will ove the system.... and £67 is a good price for the centre pipe.
