already spending bucks on the new ride (2009 yellow cvo rg) we're putting v&h power duals with 4" rineharts this weekend. My computer savvy buddy is bringing the laptop to do the tune. He ordered a tuner for me i don't know what kind it is but after he researched it he said it was made by the same people that made the sert. He likes it because nothing stays on the bike just the download . Can't wait to hear it . If you have tried this combo before ,how does it sound compared to actual true duals? I guess you would describe the power duals as being 2 into 1 into 2 . Not sure how they will perform, but that X pipe sure looks cool!