I found some threads on this topic and wanted to get some more info. Is a needle change the way to go with this setup or have you been able to keep the stock needle? Just fwi this is mikuni on an 03 cr 250. The part numbers are 3tc-14141-s8-00 (nozzle main) (bike bandit p/n 39104-001)Also can anyone compare this to the JD jetting kit?
Thanks
Thanks