I rode it for about 500 miles with and without the baffle. The akrapovic system, pair block offs, carbon can removal, and carbon can removal were done as soon as I rode the bike home from the dealer. Loud would be the one way to describe it, and the rev limiter was way to low for my liking to start with. Told Jason to do a full street tune as he was used to tuning our Zx6r race bikes, and this is the first street bike he has tuned for me. Canít talk on difference in power as I havenít had a nice dry day to ride it since last week.