That's what's great about this site, you get more of the correct information that you can take back to the dealer and tell them how to fix it the right way, I love it!
As far as what cams and pipes to put on your bike, you can ask 10 different people and get 10 different answers. The engine and performane mods that I have on my 11 SESG were the result of numerous threads and suggestions that I found on this site. Even though there was a lot of trial and error prior to where it is at right now, this was the first of all my bikes that I ever went to this extent, both with parts, lots of labor and lots of $$$$. Not that I'm not happy with what it is putting out for power, it's awesone! However, the best bang for your buck is a tuner, pipes and dyno tune. You will get major noticeable results from these three simple things, it still isn't cheap but to get more power above doing those mods you should plan on spending some serious money. On my 10 SESG I used D&D Fat Cat 2:1 with left side ghost (needed due to looks because of the extended saddlebags), a SE Pro Race Tuner and having it dyno tuned. If I knew how much I was going to spend on my 11, I would have just stuck with the pipes and tuner for the money IMHO!
BTW, The cams I am running are the 259-E's