I have a 2011 c14. When I first got it, it had the same problem. I would accelerate pull in clutch go up a couple gears up and engine would die. Electrical was ok, engine would just die. Now I have about 2,000 miles on it and thankfully it went away, just like that! Now it runs perfectly. After the break in period I was able to air it out and that may have worked the bugs out. Do the electronics on these bikes adjust themselves? I don't know. Here is what I found on the net.
OCTOBER 2010 -- Kawasaki is recalling certain model year 2009-2010 Vulcan motorcycles. The engine may stall if the rider is coasting with the clutch pulled in due to an improper setting of the engine control unit (ECU). Engine stalling could create a potential for a crash resulting in injury or death. Dealers will replace the ECU with one containing revised settings to address the engine stalling. The safety recall began on November 1, 2010. 10V-507
Recall Date
OCT 19, 2010
Motorcycle Affected
2010 KAWASAKI VULCAN
Summary
KAWASAKI IS RECALLING CERTAIN MODEL YEAR 2009-2010 VULCAN MOTORCYCLES. THE ENGINE MAY STALL IF THE RIDER IS COASTING WITH THE CLUTCH PULLED IN DUE TO AN IMPROPER SETTING OF THE ENGINE CONTROL UNIT (ECU).
Consequence
ENGINE STALLING COULD CREATE A POTENTIAL FOR A CRASH RESULTING IN INJURY OR DEATH.
Remedy
DEALERS WILL REPLACE THE ECU WITH ONE CONTAINING REVISED SETTINGS TO ADDRESS THE ENGINE STALLING. THE SAFETY RECALL BEGAN ON NOVEMBER 1, 2010. OWNERS MAY CONTACT KAWASAKI CONSUMER SERVICES DEPARTMENT AT 1-866-802-9381
Read more:
http://www.motorcyclistonline.com/motorcycle_recalls/49/2010/kawasaki/vulcan/77078.html#ixzz1NxR5L2Ku