Imagine the modeller at the field. . scratching his head and looking at all those wires going from the engine to the CPU. . then out to the injector and ignition module. . . wondering what the heck happened and why it won't run . . .

I see enough cars on the side of the road to know better than to ever go there.

KISS. . and keep it as user friendly and inexpensive as possible. That's the best plan.