I have been running Fat Shots (10 discs) with with an otherwise stock '09 Ultra Classic and have been very satisfied with the sound and performance. I am adding a Stage II Big Bore 103 kit with 255 SE cam, high flow AC and I'm leaving the stock heads alone. I have been told by the dealer that I have to add a Super Tuner or comparable fuel manager and get a dyno tune. I questioned an independant and he said all I need to do is get the Stage II download and the ECM would make the necessary adjustments. Any advice would be appreciated.