Re Jetting

Put the biggest jet set possible, note that each carb has a different stock jet.
Here is the best link to do the job. Step by step with good pictures. Shim your needles or use needles with multiple notches and put the c clip in the second notch from the pointy end for starters. C Clip too far from the tip will cause it to pop back thru the carbs, that is too lean.
http://www.vstar1100.com/1100jetting.pdf
I went with a Cobra 2 into 1 pipe & muffler and very pleased. Good luck

Syncronize those carbs!

After you open the carbs to install the jets, you need to syncronize both carbs after you are done. Its a simple to do and effective. Anytime you open the carbs up to install jets, adjust the floats or whatever, you need to sync the carbs. I made my own syncronizer and the cost was about $10, well worth it.