Found this interesting graph regarding keihin carb jetting

[9Ball]

thought I would share...might help someone understand jetting effectiveness when changing from stock equipment to aftermarket pipes, etc.  Gives an idea how setting pilots, shimming needles, or going with bigger mains relates to throttle position.

All Keihin carburetors are pre-jetted for bolt-on operation. Carburetors are jetted using stock motorcycles and watercrafts. Any major engine modifications like higher compression pistons and racing exhaust systems may require minor jetting adjustments. The following is a guideline for jetting Keihin carburetors. Perform the jetting in the order given below.



 

[pancho]

That is interesting info,,, I saved it, thanks for posting.