The general consensus among folks who use the Dyna 30000 is that its primary contibution comes in the extension of your rev limits Scott.

99-03 Road Stars rev limit at about 4250 RPM, 04-05s at about 4600-4800 (sorry, but can't remember this exactly).

A practical rev limit for the Road Star is about 5000 rpm, which is where most folks that use the Dyna set their limits.

If your bike is an 04 or later, I am not sure this represents any real appreciable benefit. On my bikes (00 and 01) it made a nice difference in rideability.

Without engine mods, there is NO appreciable performance benefit, as the Road Star motor generates its peak power near the Rev limits. Extending them adds nothing but the ability to maintain a single gear up to a higher RPM range.

I like it primarly for the twisties and mountain roads. It just provides a smoother range of transition for keeping the bike in an optimum RPM range for the road (in these circumstances).

If you can find a Rev Master (don't remember who makes it) you can do the same thing without having the option to advance or retard your timing like the Dyna offers. I played with the timing on a few bikes and really found the recommended timing settings were best for a stock bike. So having the option to adjust the timing really did not equal a benefit. Others may chime in who had different experiences though.

Rev Masters cost a few bucks less.

GRAM