Have 2010 ultra limited.....k&n filter, Gutted head pipe, PCV, D&D slip ons....Took bike to HD shop for Dyno tune......Bike returned said " Runs great but could not tune all hesitation out of it because of Gutted header pipe. Needs better header pipe......still charged 370.00. Bike runs like junk.....driveability in the 2100 rpm to 3000 rpm range is terrible....bike stumbles in that rpm range......drove 60 miles one way to have this done.....Has anyone run into this also?.....and if asked, will name Harley shop who did this.......Also, tech asked me to call him when I got home and let him know how it ran.....needless to say...he was told in no uncertain terms how it ran.....Comment was "I was afraid you would say that..." sorry for the log post.....HELP!!!!!!