I have asked a similar question before in the 350 section but now that's gone and I'm picking up my 370 soon I've provisionally booked it I for 2 weeks time into Prospeed in Cardiff.
Firstly, when I spoke to Charlie he said there's already 2 370's booked in for the next week with them so was wondering if any of those guys are on here? 1 of them I think was called Simon and was having an electric valve fitted too?
Also, being as I can't find an exhaust which I really love on here on anywhere else online, I've decided to go custom. But of a risk because no idea what it will sound like, does anyone recommend against a custom one? He's wuoted me £480 all in for a cat back, much cheaper than off the shelf and they have a great rep!