Bill, Tracy and others,

I should have added that I spoke with Ross about using his system on the rotary just last week so, I suspect his comment was accurate...unless he was juiced up on his morning coffee as I like to be!  I also suspect Tracy is making a very good point with the MegaSquirt system.  Challenging maybe, difficult sure, yet in no way impossible.  I worked in combustion at GM for over a decade and am an instrumentation specialist from my graduate school days in physical science so I have a few points of confidence to draw from.  Open source software has become a huge advantage to the RC users so, I suspect the same will be true with MegaSquirt despite that aviation is likely to represent a small segment for their audience.

Rick