I have the thundermax auto tune on my 05 Deluxe, And The Harley speedo/tach 70900070A. I also have a baker 6 speed. I know some features won't work, like the gear indicator or miles to empty.
But I did get the 6 gear indicator to work! You have to go into basic setting , turn on 6 speed and set the final drive to 83. Also I can give anyone with a Deluxe the speedo calibration if you have the Baker 6 speed. Mines right on with the gps.