do nothing untill you have derestricted the engine. ride the bike for a bit and get used to the power, then fit your pipes and jet the carbs. the pipes will make little differance to a restricted engine. and you,ll need to know what the engine runs like, before you play with it or you never know if your making it better or worse. see the problems stephen rc45 had. do NOT fit the pipes and leave the jetting , you'll melt a piston