VStar 1100 chokes when into gear and accelerating

The simplest test is to hook up a strobe timing light and see if it flickers regularly or not for both cylinders. If it does, you can (almost) eliminate ignition as the culprit, as the chance of the timing being off is very slim.

Having the same issue with a 650 probably fuel or air

V-Star 1100 Wiki Knowledge Base - 1 New Owner "MUST READ" Section you can get tuning info here.

Mine starts and runs fine for a while then either losses spark in a cylinder or fule .. I'm assuming spark but no real idea what's going on I'll let u know what they find when I find out