Denim,
It reduced buffeting significantly, but not completely. A very cheap fix for your problem is to get the fork mounted defectors. They worked FANTASTIC for me until I got the screamin eagle passing lights. Unfortunately not compatible with those. I have a taller windshield coming from clearview for my fairing, (long lead time

) which should fix the rest of my problem.
The buffeting is really coming from the airflow around the bottom of your windshield which then hits your midsection and mixes with air over and around the top of your windshield. To prove my point, ride with your legs as close to the tank as you can, then open your legs up, buffeting gets worse, then put your feet up on the highway pegs, buffeting even gets worse. The fork mounted deflectors got rid of almost all the buffeting even if my feet were up on the highway pegs.
Another source of the airflow under your windshield is the lack of a deflector between the forks. MOCO removed it on our bikes due to engine overheating. I've had 2 stealers say not to do it, but now that I have a digital temp gauge and some ride time without it, now I can compare and see if it has a "real" effect.
Hope this helps,
Steve