Change of exhaust....like thunder

I was doing a little spring service this morning, getting the sv up and running, battery had been plugged into the trickle charger/conditioner, but was running ruff as the fuel had gone off a bit...so new fuel and a new plugs had her running smooth again...so as I had some time on my hands and a Beowolf end can on the shelf I`d bought at the end of last year, I removed the Scorpion can I had on and fitted the 100mm shorter Beowolf....what a difference....it sounds like THUNDER, I love it ....might just have to make a baffle to calm it down if I get any complaints.