I now have my little microcontroller firing off 4uS +/- 100 nanosecond pulses, within about 100uS of getting a PIP shot in from the EDIS module. As in, every pulse is the right width, between 4-1792uS, and doesn't just have "about 4uS" precision, it has "about 0.1uS" precision, and this from a chip that costs less than USD $3. I've got all the rest of the stuff: the sensor, the module and coil, hooked up and about ready to go, so now I have to make this automotive grade rather than a chip I soldered onto a homemade PCB, and I should have a decent little setup.

Of course, if you count labor costs, I've spent about 10x what a megajolt jr would have cost. But it's the thrill of getting it to work, right?
Besides what else do I do when it's 40C outside.

40C? In Oregon?