bdtsr. . I "adapted" a 4-cylinder GM car computer to see what would happen and if things were worth pursuing. . one injector, lowered the fuel pressure to 6-8 psi instead of 32-35, basically playing to see if it COULD be done. .

Okay, it worked, sort of. . not that I used the setup to actually run an RC engine, but by taking a tap off the crank sensor signal and feeding it to the automotive computer you got one injector pulse per 2 revolutions (batch fire with a distributor. . 2 pulses per revolution for ignition and one for injectors)

Would it be adaptable to an RC engine. . sure, if you wanted to take the time to do it. It CAN be done, but it was 3 weeks of trial and error and signal chasing, as well as cobbling up a crank sensor circuit to mate to the front of the test motor and feed the automotive computer. I got injector pulse, and ignition timing signal out of the computer, the rest is up in the air but I'm sure you could fiddle with sensors and values to adapt the stock automotive fuel and ignition strategies to our engines. . just a matter of time before someone succeeds.

I'll stick to the off the shelf items that come with the engines. . .they work pretty well.

BTW. . you would probably add a pound of weight and a lot more complexity than is necessary. have a go if you are feeling adventurous, though.