I have the Epcos which are louder than the TORs. I then
removed all of the glass packing and left the cheese grater
tube in. That gave them a little more deep rumble and made
them a little louder still. I also have a set of 1 7/8"
drag pipes with a small baffle ring so that they appoximately
match the flow of the Epcos. I don't think that the drag
pipes are as loud as the Sceptres, they are loud and sound
great. Figure out if you want to listen to LOUD all of the
time.
