It seems like this has been asked before but I can't find a clear answer. I have a mountain kit MPI supercharger that was made for Yamaha Nytro's. The sled came with 28/28 pulleys which gives me around 6/7psi running at low elevation. I want to put a head gasket on and increase the boost so I can run on pump gas. What do I need to increase the boost to say 10psi? Is an intercooler necessary? Are the pulleys available somewhere online? MPI's site does not have them. Do I need a larger top or bottom to increase boost? I'm guessing bottom. Is there a chart that shows the relation of pulleys to boost out there? I'm hoping to get this done for less than $1k. For those who are running 10psi, is the sled easy enough to handle in tighter trails that are very common in upper WI? At first 6psi seemed a little overboard but I soon got used to that and wanted more. Maybe 10psi is not enough
