For anyone who has never heard of the MegaSquirt it's an Open Source ECM technoligy. You can actully but the ECM in pieses and build your own. I have read the manual and learned a lot about EFI systems in general. The MegaSquirt has differant versions and they have parimeters to run just about any sensor. Very interesting for the GearHead!
http://www.megasquirt.info/

One of the best suppliers I have found for MegaSquirt ECM it kits or already built is DIY Auto Tune. They are also a great place for many DIY fuel injection needs. I got my JimStim from them and they also carry all small parts to service what they sell.
http://www.diyautotune.com/