Really does make a difference. Recent purchase of my 48,000 Mi 07 Norge and while I love it and it reminds me of riding in the 1970's bike, it felt kinda raw and in a torquey tractor way, powerful.
Finally got around to having decent 40ish degree F sunny weather to get into the garage to do my first CARC Throttle body balance and TPS reset using new tools on Hi Ho Silver w/48,000 Miles. With my new Carbtune in hand and Guzzidiag connected I got'er done. S M O O T H... even as it was not that far out of compliance and pretty easy to do now in the rear view mirror. Would have been very challenging to accomplish it without A LOT of reading, some new tools and guiding insight from some very helpful individuals who write directions quite well. Something very difficult to do.