I just got mine on, it just barely fits in beside the engine breather, You have to take off the little clip that holds the carb breather and stick the breather line in behind. I put the original foam back around it and it pushes out on the seat a little. The 800s must have more room up in there. I didn't notice any difference (wasn't realy expecting much) for the little rideing I did today.

-Jeff

 

Adding more air alone will not give you power. Adding more air which enables you to jet up is the only thing that will give you power.