Originally Posted by barrybasinger

Order from your dealer. The Harley service replacement ECM for your bike is made by S&S, and can use the S&S VFI software and tuning processes. It presents the mm TPS/RPM cells rather than the S&S ones, but other than that, it is the same for all intents and purposes. It can use the HD mm throttle body, or any other that is dual throat, without firmware updates.


Your dealer has maps for stock, stage I and II tunes that would have been available from the dealer, and they're really not too bad. If you run across a dealer that doesn't speak mm (and there are many out there), and can't supply you with one of the maps, contact me through this site and I'll send you one.


The software and the ECM are very flexible, and can handle about anything you'll do in the future, but this unit is kinda rare out there, and there are not many around who are familiar with it. (It is not exactly a unit to learn EFI on, and the fact that you have mapped a couple PCIIIs does not mean you can jump right onto one of these). Can be fussy about idle and warm-up settings, too.


If you were thinking auto-tune, note that auto-tune option for this unit is narrow-band only. This is fine for stock bikes and can be made to work with stage I bikes, but requires some added thought and creativity when going beyond that.


On the other hand, if you wanna stay with EFI, you don't have a lot of easy options...