It is a PV2 that I originally bought to go on the IronMan, but decided against it so as to not disturb whatever planetary alignment that has occurred to give it more than average stock power and mileage.

I installed a PV2 on the Dragon right after they became available and it was a bit harsh initially but mellowed within a few months of daily driving. My personal comparison of the sound would be to a 4-cylinder Japanese sport-bike with a 4-into-1. I've got a '73 Kawasaki Z1 900 running a Kerker race megaphone with a 2.5" baffle and it sounds a lot like the PV2, hungry and looking for trouble!