I have been struggling with the sound since I picked up mine middle of Oct. Tried a couple of different slip ons but even the CFR's I tried sounded "clogged up". I was so hung up on keeping the bike under warranty I have been torturing myself for 5 months. My dealer has been terrific and a couple of weeks ago installed a Fuel Moto head pipe with the CFR's and tried to tune with the Pro Street tuner but of course it couldn't be done. They suggested I get a TTS tuner and a good tuner to make everything work (CA dealers can't use dyno's) and if there ever is a issue that they can't approve by themselves we could re flash and lay the stock exhaust by the bike for the inspector to see.
I know the CFR's are not great for performance but my brother in law has them on his CVO Roadglide and I have always loved the way they sound and I have Boarzilla's on my other bike (which I also love the way they sound) so I decided it was worth it to me.
Today I took my bike to Gene Thomason who Steve Cole recommended in Gardena CA and all I can say is WOW! not only does the bike sound absolutely amazing, it runs like a completely different bike! Of course I am losing some torque at the bottom (but still way better than it was) but the bike is pulling hard all the way up. Ended up with 120 TQ and 116 HP (i have the stage 3) and really didn't know there would that much of a difference with a talented guy like Gene doing the tuning.
After 5 months and 7000 miles of torture, I couldn't be happier! Don't wait, go get whatever aftermarket exhaust you want..