I have pretty much the identical bike (mine is a US-market 2008 G11 in red also). Bought 2 years ago, off EBay.....
I also have the Zard pipe, and it sounds Identical. Really identical. I didn't hear anything unusual in that clip.
Takes about the same amount of cranking too.
Well - the idle speed did look a little low initially - until he rev'd it.
Anyone who can load video on this website can handle GuzziDiag just fine, so a TPS reset / check throttlebody balance would be a good start.
Probably a revised FI Map would help - apparently the Zard is significantly different to other pipes...
The Griso Mapping Guru 'Beetle' from Down-Under got me one, and he helped me make refinements. If he doesn't wander-by here soon,
search for his postings on other Guzzi Griso forums.
Great bike - you'll enjoy it I think.
Jeremy in FL