Put your baffles in

[nick crisp]

I have a scorpion can and front pipe in my FZ1,  there is a difference with the baffle out and in. Out makes more power at the top end noticeably so but less torque at low revs again noticeably so, and visa versa. I keep my baffle in for day to day riding even with the baffles in they are very quick way to loose your licence only take the baffle out for playtime

I've always put louder aftermarket pipes on my bikes. I like the sound, usually as long as it isn't too loud. Never been done, or even warned for a loud exhaust in 30-something years, even when pulled for other things, and one or two have been quite loud.