just installed a set of cfr knockoffs on my 2013 streetglide. at this point it's basically stock with a se heavy breather and that's about it. i've seen the video clips on youtube and they sounded pretty good, but i was totally dissappointed with the sound....and i felt i actually lost power. i wonder if the race tuner is the answer, or maybe i should've just stuck to my original thought of a getting a 2 into 1 exhaust.