Just wondering what was the nicest add on that you bought or received after getting your 14 SG.
Which SE pipes did you try? What don't you like about them?
I provide some info on the H-D sound in my StreetGlide.com blog here: The Harley Sound
I went with the street cannons, to be honest i love the sound but it's just not loud enough, when i pull back the throttle hard they sound ok.
I've read that the Street Cannons are quite a bit louder if you get a cat-less head pipe.
I'd use this V&H headpipe: Power Duals
You can then use just about any slip on mufflers.
Ask your dealer about the warranty. Probably will be OK if you let them install an H-D tune.