I went the home brew route. I made my intake with some parts from an auto parts store. I used the Edelbrock Pro-Flo 1002. link
They make other shapes as well but I like this one. You do have to make a custom plate to mount this thing to, but it is not too hard. You could use almost any air intake for a car as long as you can adapt it to fit.
I went with the V&H Twin Slash Staggereds. They are loud as hell link
Went with the Cobra Fi200R also. Works great.
Remove the secondary butterflies
Easiest mod you can do. Just unscrew them and take them out.
Remove the Air Bypass valve
I went to my local auto parts store and bought this package of bypass caps. You only need 2x 5/8in. caps for this but I could only find the assorted pack.
Then you just take the the tube off of each cylinder head and replace it with a vacuum cap and appropriate sized hose clamp.
Then remove the electronic valve that all that tubing is going to. It is under the tank. You just pull it towards the front of the bike and it slips off of a peg. Then unplug the valve.
Snip the plug off. These are the 2 wires that need a 220 ohm 1 watt resistor soldered between them. Make sure you use heat shrink or tape around the bare wire to keep it from shorting out. Then tuck it under the tank behind the spedo.
So end result.... My bike is fast. Well fast for a 900 V twin. It's not going to beat out a Ninja ZX-10 or anything like that, but I have given a few punks on sport bikes a hell of a surprise going from light to light. It wasn't slow to begin with either. Now it is just faster
Fast enough for me at least. Well worth all the mods I made to it.