Originally Posted by grahamc
They do not all drone. I have not seen many valve based options on the forum, so would be good to see any of those listed. I know of one person that did a custom valve via SRD.
I run Milltek downpipes and a silenced ypipe, to avoid the motorway drone.
do you think if i installed a secondary cat bypass, probably milltek? Does it make benefit to the exhaust sound and would i get any motorway drone?