I installed the chrome tipped Monster Ovals on my 2008 SEUC yesterday, and the Screaming Eagle AC with K&N filter today. Don't let the Vance & Hines marketing phrase: "Monster Ovals crush the old saying that more power requires more noise" fool you -- these cans are LOUD. I can no longer hear any engine noises, shifts other than into 1st gear, and I have to run the radio at least two 'clicks' higher volume to hear it.
They got the tone great -- these have the lowest, deepest rumble of anything I've heard on late model Harleys, but they're not quiet. I was hoping for something just a little louder than stock.
The odd thing is that they don't seem to be that loud when I really get on it or run it up to 3,500+ RPMs. Where they seem to really rumble is a casual takeoff from 0 to 35 or 40 when you only crack or use about 1/8 throttle. When the RPMs are between 1,800 and 2,600 at small throttle openings, these MOs really rumble loud. It seems like the things you'd normally do to quiet down loud pipes just make these come to life. When I really get on it or at higher speeds running in the 2,800-3,200 range they don't seem nearly as loud (maybe about 30% louder than stock).
I know sound is very subjective and difficult to describe, but I was quite surprised at how loud these are just off idle. They don't bark or pop at all when I get on it: in fact, they seem to be a lot milder than my friend's True Duals with Rineharts. His pipes really bark when he gets on it or gets into higher RPMs.
All in all I love the tone/sound - but they definitely make themselves known..