Does anyone know how the blackbird ecu deciphers the crank signal. Theres a 12 tooth rotor and single pickup coil. I'm hoping to use a megasquirt or similar to run inj and ign but there seems to be very little info on running this engine on after market ecu's.

Rather than a missing tooth or two, there should be a wider tooth. That's the signal. The later engines also have a cam sensor, but I don't know what that wheel looks like.

I knew it would not take too long, thanks

As far as i know, the inj bird has a 12 tooth (evenly spaced) trigger along with a cam phase sensor to trigger the ecu.

The carb bird has the same crank trigger but with a few teeth missing.

Carb ignition is run by its own ecu.

I have a carb bird engine that is being converted to injection with inj bird throttle bodies & megasquirt.

Only running fuel at first with the carb stock ignition then will look into triggering the sparks to run with the megasquirt later on.

Not really got started yet still have to build the megasquirt..........

Ash.

Pic attached of carb rotor, ok boffins, now lets have info for running after market ecu's