I was told this is a good place for information. I have a 08 Ultra with monster ovals. I would like to finish off the stage I. My purchasing dealer told me that I need a High flow a/c with a SERT/dyno. I went to another dealer and they told me that all I need is the high flow a/c and a one time download to my ECM to let the ECM know about the air cleaner and exhuast, no SERT/dyno or even a Fuel Pack/PCIII etc. Who's right???