No rejetting a carb isn't hard, the key it being careful and keeping things clean.
Just remember though
Less Air + Less Fuel = Less Power

The major problem with the Ram type intake is that it requires moving through the air. Say you are stuck in a big mud hole, you think you can force enough air through the Ram to keep your motor from bogging down at 3000 RPM like it does now? A Ram Air system is good for things that are already moving through the air pretty fast, they do almost nothing at slow speed.

 

So are you saying that he is getting too much air?
They way he described the problem it sounds like too little air to me but I have wrong before, just ask my wife .
If what you are saying is true then all he would have to do is put a type of restrictor on the opening to limit the air intake right? Like maybe a cap for a 2 inch tube or hose or whatever he is using and then drill a small hole in the center in the cap. Or he could slip on a 2 to 1 inch reducer. The air will only flow as fast as the smallest opening will allow.

 

sorry i missed informed you. it is 1 1/2 inch abs pipe. i tried a air ram with some sheet meatle, i made it into the shape of a cone and it hardly helped at all.
also, can i tell if im getting to much or to little air by puting my hand at the end of the snorkle

 

Best way to tell if it is too much air is to partially block the end of the snorkel (a piece of tape would work) if the engine runs better then you know it was too much air, if it runs worse then you know its not getting enough.
Let me know I'm curious to which it is.