I just installed the Volant in my 2011 and it was definitely a trying experience. The instructions were not the greatest especially for someone like me who has no experience with mods. Thanks to Brad12kx and his thread which helped out a lot!!!
http://ramforumz.com/showthread.php?t=93848&highlight=volant+install
I did have some trouble getting the Volant to fit at first but now that it's in place, it's not going anywhere. Mine actually fits pretty well once I got it under the AC pipe. I just hope I never have to remove it now. =)
After the install, I started my baby up and noobie me was expecting to hear a difference. It wasn't until I got on the road and let it open and man does it sound so much better. So take your time (and a few beers) with the install and I guarantee you will be happy.
Like I said, I am a noobie here so I have no basis for comparison with other CAIs. I just like the look and the massive PowerCore filter of the Volant. I could have sat on the boards all day going back and forth, like I am currently doing for other mods

, so I just pulled the trigger on the Volant. And I got my Volant for under $300 with free shipping/