Don't Download! All you get for your money is an EPA stepped on POS. Go SERT or PC. Do a search to learn the differences between the two and make your choice. Ofcourse a dyno tune is best but both have canned maps that are much better than the download POS.
I took my bike in last week for the 1000 mile service. Asked the service manager about a download for the ECM. He said that there was one available but that it wouldn't change anything enough to justify the cost. He recommended that I wait until I change the mufflers and air box and then retune the bike with a SERT and dyno.
I went w/ the PCIII and a canned map for now.
Will install true duals this winter and then dyno tune.
The HD download is a $150 that you can't adjust (like a tuner) in the future.
thanks guys , it looks like a power commander. i won't bother with the other crap from hd. and as soon as i figure out how to change the avatar you will see my girl.