yes, and no.
if you just use his cvo slip ons completely stock, then they will be very quiet on your bike. less than stock. they are baffled to keep a larger engine within epa specs.
however, for just a little money, you can remove the stock baffles and replace them with the fullsac power cores and have a great sounding, great performing, great looking exhaust.
seems most folks go with the 2.0 inch cores which are a little louder than stock, but are the best performing. i am using the 2.0s. nice deep tone, does not give you a headache while cruising long hours in the saddle, and is not obnoxiously loud to bother your neighbors early morning or late night. and does not drown out your radio.