Theres a couple peeps on here that are running them.
Its a basic programmer for the 3 basic mods. You cant make fine adjustments, just general adjustments. Its not upgradeable.
They Dynojet programmer is tuneable every 250 Rpm and at various throttle positions. You make the fine adjustments with the laptop through the USB port. There are several upgrades available listed on their website. There are patches that come out from time to time like the acclerator pump that are free to download. Most importantly, they have right around 60 premade maps for the more popular intake and exhaust combinations. So instead of tuning by trial and error, you can just send a map to the bike and its tuned. EASY.