I haven't got the figures to hand on the before and after with the PC V, my main aim was to fix some of the low rpm bogging behaviour/response on light/part throttle, as I also commute on my BB into a very congested town where filtering can be a handful. So far so good on that front. The PC V will make it easier going forwards depending on what I mod next.
The de-cat is a TEC X pipe and I've got the US spec V&H pipes.
I chose the US spec V&H as they're meant to have removable baffles. The plan was always to get rid of the cat but if it wasn't loud enough then I'd have been able to take out the baffles. Based on the results its nice and loud, but if you're careful you can roll by sensitive folk (like horses or police). Baffles out would be too much and I'd get rumbled!
I'll have to try to find a good way to record it, but having seen other peoples attempts on YouTube I suspect its not going to be easy to achieve with just my mobile phone. Doing it while stationary really doesn't do it justice compared with the effect when the engine is under load while riding.
The quick summary is a throaty drag racer roar when you pin it, more crackle on the overrun and machine gun popping on engine braking! That description is me being tongue in cheek so don't take it too seriously, but it is way more fun now!
The reaction by my wife and little lad when I got home was perfect. He was glued to his bedroom window shouting "Rev it!, Rev it!" which I did!... and my wife stood there with her mouth open and then eventually said "you're going to get into so much trouble!"
Job done then.