My busa has a Yoshi,
my 12r has a muzzy,
my mille has an akro,
my mv has the 'factory' arrow performance pipes,
My 99 Ducati 900SS has a lid less airbox-
a CF vented dry clutch cover-
the usual Duc noises-
Plus some Dumb & Dumber slip ons. When the duc is at idle, I can't hear any of the other bikes running. The louD & louDer pipes bother some harley guys.
I was NOT expected ANY HP gains, I wanted the LOUDEST, MOST OBNOXIOUS, LOUDEST pipes made, I am quite happy with them. (some guys even 'core' D&D pipes-OUCH!)