Wow! It's seriously like taking the muzzle off of your Rottweiler 1090 dog.
I also deleted the smog stuff and I swear the bike felt lighter this morning, I know it wasn't but it sure felt it.
Also it's really really REALLY nice to have a tool storage under the seat, theres enough room to keep my tools and my SnapJack!
I would totally agree to do lights first, I put on some Denali auxiliaries and the Cyclops led headlamp and that's a worthwhile mod.
My wife and her son (both riders) commented on the added visibility of my bike on the road now.
The intake isn't difficult at all, a little time consuming but that's mainly because I was (and you probably will be too ) cleaning things up, like wiring and zip ties, etc.
I took an entire (pouring rainy) day. You could do it in half a day easy if you're familiar with the bike, I had already taken the tank off several times before this mod.
The sound of the bike is just wicked when you open the throttle.