Originally Posted by LA_Dog

You can get a variety of tuners- Some like the V&H FP3 for ease and convenience, others like the Dynojet power commander / powervision, and there's also the TTS Mastertune. I have a Powervision myself and am a hard core tuning tinkerer.

You're looking at about the $300-$500 range for a decent quality tuning device- but it will pay you back in spades with a better running EFI bike. good luck and ride on-

note that a HD dealer is not going to do much of squat in regards to proper fuel tuning- all they can do is tune to epa standards. some dealerships ignore that but most adhere to it. if you elect to go to a shop instead of buy a tuning device, go to a quality dyno tuning shop with a DirectLink dual probe sniffer on the dyno. You'll get a one-time accurate tune for the bike, tuned properly. usually runs about $500. tough thing is there are a lot of BAD dyno shops and very few good ones. so always investigate their rep first.