Pilotwhale- It depends on which can you got, which baffle is in it, what it is made out of, and whether you plan on repacking it when the packing goes away. Muzzy round cans are louder than oval, and about a pound lighter. Muzzy makes a quieter baffle that you have to ask special for (I did not). Carbon cans have to have packing in them or they will burn up. Cans with packing are quieter than cans without. I got the round ti can with the loud baffle, and I can hardly wait for the packing to go bad. I will not replace it. It is almost as loud as the can on the F3, and it's only going to get louder. It sounds like the big dog on the block regardless of sound level. It sets off car alarms going 30mph in first gear cruising down city streets. I like it. It has already saved me from a SUV attempting a lane change over the top of me.