Has anyone used a jd jet kit for a keihin 39 fcr?
Many 250fs use a 39 and many use a jet kit.
You made a somewhat ambiguous post. What running issues are you trying to solve?
I'm about to put it in my drz400, just wanted to know basically if the needle in it is as good as an emn or ncyr needle
No need for the jet kit in a DRZ. Use the EMN needle.
Do not make the mistake of over anylzing stuff and second guessing.
Use the normal rec. jetting for the FCR you are getting. Slant/MX and depending on the source of the carb.
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