I replaced Remus quad and Duke Dynamics diffuser with Inside Performance muffler and diffuser kit. The problem with Duke Dynamics diffuser was that it didn’t fit properly. The shape isn’t quite right and it’s difficult to bend. Problem with Remus was to make it fit to the diffuser. Advantage of the Inside Performance kit is that the diffuser fits quite nicely and the muffler is made for the diffuser.
http://www.insideperformance.de/onli...70/language/en
Inside Performance
Duke Dynamics/Remus