The stock pipes and air intake are way anemic on the new bike. Very quiet and choked down. My '09 96ci Road Glide feels stronger with Vance and Hines true duals, monster ovals, heavy breather and a tune. I'm going with D&D 2 into 1 with ghost pipe, heavy breather and a dyno tune for the '10 SE. Have to wait a couple more weeks for the pipes as Harley moved the O2 ports for '10 and D&D won't have new product till then. I had a V/H Pro Pipe on my '06 built Ultra. Made lots of power, but too loud and a UC looks stupid with only one pipe. So this will be an experiment in obtaining the power you get from a 2 into 1 while lowering the sound to that sweet spot of tolerable on the cruise, but nice bark on the throttle and two pipes sticking out back. BTW, I saw a SE Street Glide on the showroom floor when I bought my SE Ultra, VERY SWEET!