i have a '97 honda trx250 recon with a K&N filtercahrger in it. what i plan to do is have an open air box, and put on a t-4 pro-circuit exhaust. but there is a problem [img]i/expressions/face-icon-small-sad.gif[/img] i need to know is what size of main jet comes stock with my recon, and how many sizes up i should go, with these modifications. i live at an altitude of 250 ft. ANY input would be GREATLY appreciated. thanks