Hello Keith,
Good question and it echoes a long term question with me also, I had a 418 built using the Electromotive TEC3 some years ago and it was a nightmare to program, it has been removed in favor of carburation by the new owner. The new fast technology may be the answer but, whatever you do make certain that you incorporate a closed loop feedback to the ECU.
Another option I have heard good things about is the Dynatek units.
http://www.dynaformance.com/download.php
No personal experience but, there is a great deal of information on their web site. Please keep us updated on your decision and the experience.
Good Luck,
Tony R.