I believe there are 2 hoses that go into the air box. One from the header and the other I haven't really looked at. They seem to re-circulate the air from the header back into the air box. Probably why the pod has been working fine. The other thing I did was drill out a hole before the cat on the exhaust, another reason why the bike seems to be running fine with the pod. I'm willing to bet that if I didn't drill out the hole in the pipe I'd have problems from the jump, but I'm not. Cause the cat is so damn restrictive. I looked back at another video and the stock carburetor jet is a 78. If anything I'll change it. In the same video he said to order 50cc jets because other jets wont work. I'd rather spend $7 on jets than $43 on a new carb. Or hundreds on a new motor...