i need some info because i dont knwo much about what will happen with a higher compression psiton. I might have to go aftermarket as me and my dealer were talking about that poalris doesnt offer and bigger bore pistons, and am going to have to bore the engine too if they dont end up paying for the parts. What is the highest compression i can go without changing anything on the engine? or is it even possible to do ths without getting new and and cdi. Please help thanks.