It gets mentioned a lot in threads, I think it would be useful for many to have a explanation of what iBeat is. I'll start by saying I don't claim to be an expert on the topic but I'll pass along what I know. Please chime in with your knowledge and experience. iBeat is Mikuni's software interface for the fuel injection systems on our bikes. Dealers have a Mikuni dongle and factory software for servicing our bikes and I believe this OEM stuff is available out there somewhere for anyone to purchase. What most of us have done instead is buy the "dongle" from Semco Designs ($154) and download the software from JTemple's google drive (free). Dongle http://semcodesigns.com/Products.html iBeat .iso file https://www.dropbox.com/s/9yr7xbfh36dl4ot/iBeat%202.1.iso?dl=0 Drivers https://www.dropbox.com/s/aoez1atenxm77cu/iBeat Husqvarna EFU USB V2 Drivers 1.0.iso?dl=0 Manual https://www.dropbox.com/s/2kvk2rztd7bx6uc/iBeat_OperationManual-English.pdf?dl=0 The software file is a .iso file which means you download it, burn file to cd, and then install from the cd. The computer needs to be a 32bit Windows machine so if you have an older laptop you're probably set. Once you have the dongle and software installed you're ready to go. This is it, about the size of a pack of gum and comes with a 10' usb cable. Diagnostic port is behind the headlight shroud. Turn the bike key on before starting the software. Main screen looks like this. (For some reason my netbook cuts off the bottom?) Some of the stuff it can do: - Adjust the fueling of the bike. Click the "CO" tab at top and you get a box that lets you adjust three areas (1 - low rpm/throttle, 2 - mid rpm/throttle, etc). The number represents a percentage of stock value. Most have found 100,105,116 works pretty good on a mostly stock bike. 102,108,120 works for an aftermarket exhaust. Put the numbers in and hit exit, that's it! We are only adjusting the fueling, not reflashing the ecu. EDIT Nov 2014: I've changed the recommended "low" numbers to reflect adding little to no fuel (they were 108/108/116 and 110/110/120). - Reset the throttle position sensor (TPS). Click the "TPS" tab. I believe the bike is supposed to be fully warmed up when you do this. - Check for error codes. - View all the sensor values while the bike is running (nice on the dyno). View: http://youtu.be/HHIGioqJ2ME If you poke around it does a few more things but that's most of the cool stuff. It's fantastic to me that the electronics of the 630 are accessible with a $150 part. Enjoy! .