VT-VZ Exhaust What's Responsible For Drone

[Mohit]

I have a supercat cat back on my SS no drone at all sometimes makes you wonder if it is a V8 until you get up it not loud really not to me it sounds just nice ,but in saying that my kids hear me leaving home in the morning for work 7.30 am they like how it sounds so all good here ..

Exactly how the Supercat used to sound like on my VYII SS, which is why I was surprised with the drone on my VYII Calais when another Supercat was fitted to it.
I'm sure once the quieter rear muffler is put on by the shop it should be all good again, like this: