the slip-on and full system give the same sound. the catalytic converters are in the STOCK silencers..So when you put slip-ons on the bike you automatically remove the Cats.
im def getting the full system, at first I was only going to get the slip ons. but after that video......there is no other option than to go with full terms
I heard the stock pipes on a S in person yesterday at a dealer. It does sound pretty loud, like surprising for stock pipes loud. However it is no where as near as loud as the Termi's.