what does the timming advancer do in Dales stage 1 jet kit installed on the B6!
I will caution you, I have seen a case where a timing advancer will make your bike idle like crap. This happens when the bike's timing may be a little off from the standard factory settings. The B-12's timing is not adjustable, so whatever you get from the factory you must live with.
With the bike in question, the advancer was removed and instant idle was acheived.
You could check with Manny on this board as if my memory serves me correct, he has written a few posts about advancers.