Don’t waste your money with hd download; they are junk! Go with the race tunerup front, I went with the download when I purchased the bike and ended up installing the SERT to get the bike to run right with the ST 1 kit & the slip-on exhaust !
I picked up my '05 RK Classic from the dealer with the Stage 1, the Dreaded Download, and the SE Slipons. Sound was Awsome from the first mile on the bike. Immediately I noted the popping and backfiring on decel, dealer had advised it was "normal". Other dealers (I just had to check around) have advised the SERT as the only fix, but not necessary to run the Dyno. Dealer claims the SERT is adjusted by the tech after road testing the bike. Any input on that folks? Also, dealer advised Power COmmander was a definite NO-NO. Any response would be appreciated.