I'm running rush slip-ons, ness big sucker, and PCIII tuned by Jamie at fuel moto on my 08 road king classic. Should i spend the extra $ to have her dyno'd? could i pull more outta my engine?

 

I would decide if I needed a dyna tune by how the bike runs. If it is smooth all through the rpms, no decel popping and getting decent fuel mileage, I seriously doubt you will gain enough by the tune to make it worthwhile.

If it is not running smooth on accel or decel, or you are getting lousy mileage (under 40 mpg while riding easy) I would consider a good tune.

Dennis

 

agreed

 

I think Jamie's maps are pretty close but I did get a noticeable improvement with a good dyno. About 5 hp/7tq. Throttle response was much better.
My understanding is that there can be a +/- 5 % difference in motors. If so, that's potentially a 10% swing.
That being said I'll say this. Mine is a very early 07 96". I would bet Jamie has learned alot in the past nearly 3 years. His maps are probably alot closer now.