so with a pc5 , i might the map up ,trying to get the throttle adjusted right 
Depends on what is causing the hesitation. If it really is ETC lag, get your dealer to look for a better download from H-D to fix it. On the other hand, many bikes without ETC also have a pretty severe hesitation off idle. When you roll the throttle on at low engine speeds, you get into one of those areas where the stock H-D maps are extremely lean, 15 or 16 to 1 isn't uncommon. That kind of problem can be tuned out. As for mucking up the PC map trying to fix this, all you do is save the current map to disk before you play with it. If you muck something up, you just reload the old map and you're instantly back where you started.
I believe the new 2011 CVO Softail has ETC now as well. Eventually I'm betting it will be across the board, but for right now the Dyna and regular Softails still have cables.
Jerry