The carb neck is the same size as the Novarossi [15MM]........The "effective area" of the carb venturi is semi-conservative and will run well right out of the box.
The carb is very straight forward and does not need any mods to run very well.....A remote needle valve is required with the carb.......
The carb is very straight forward and does not need any mods to run very well.....A remote needle valve is required with the carb.......