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Now, instead of plugging the hole on the air-box hose, I used a pcv valve. The valve only lets air in and not out. Since my engine is running rich at idling (because of the long intake pipe and the up-jetting)) this might help to breath a little better. The valve will also help to keep the pressure when scooping air with the intake, since is not letting air out

jct842 Why wrong? I said "My air is colder then a uni filter setup above the engine". Even if you are moving, the ambient temperature is higher there than the front for sure. And when you are not moving, your filter gets heated up and the stuff around your filter also absorbs heat and then radiates it. I only ride my scooter in the city, so its stop and go with few straits. I know "It would take some real engineering to design a ram that has the proper air/fuel mix", but that was not my goal to make it proper. I'm not an engineer, I read few thing about ram and my understanding is that Ram usually is most effective after 50 mph, the length of the pipe relates to what rmp's you will get the most gain (shorter pipe means max gain at higher rpm, longer at lower rpm). The opening of the ram air - the faster you go, the smaller the opening should be for maximum efficiency, going slower -bigger opening... So I wanted to experiment and I did get better results +3 miles top speed and faster acceleration to top speed. What is your gain from the uni filter?

Yeah man, the plastic white piece goes on top of the needle the way you have it on pic 2, but it needs to go further down. Check your needle if its positioned right. Then you put the spring on top of the white piece and close it

I would probably need fuel injection to work. I think the scooter when is idling is not getting to much air, because of the long intake pipe. But it runs good when I run it through the air box, so I don't know. I ended up with this setup:
[img src="i62.tinypic.com/20h9imf.jpg" src="http://i62.tinypic.com/20h9imf.jpg" style="max-width:100%;"]
Now at top speed and down heal is running lean (have #85 and #38 jets), you can hear the air getting forced and sucked up

jvino I only have one scooter.
jct842 I was thinking the same thing and I wanted to compensate with the larger carb jets, but it didn't work. The scooter lost power and speed but sounded nice. I used 3 filters between 3 of the joints. After 5 min of testing and failing, my spark plug went bad and got totally dark. I went back to the original design through the air box and the scooter runs good now.

The fail video:

Thank You Rich, good to know

Thank you guys!
So the crankcase breather hose I can just leave it hanging without plugging it when I get rid of the air box?
jct842 I am not worried of debris going up my intake. I put a fine metal window screen at the tip. When I get rid of my air box, I will also put a cut out of vent filters on at least few of the joints. My first set up of the intake was with two vent filters on two of the joints, but I took them out since I am still running it through the air box. The hole for the intake is not directly behind the tire, but more to the left.
I have been riding my scooter for almost a week since this mode and so far no debris in the intake pipe or the air box filter. I get 3 mph more top speed and now down hill accelerates a lot faster into red line. Yesterday I did 9800 rpm couple of times for several seconds with no problem(down hill). I have stock cdi and everything else is stock, except iridium spark plug. I ordered performance cdi and ignition cable and larger jets. Will see then...
Intake opening behind to the right:

The filter I will be using between the joints: