Glad you went through the math - Yes, I made an assumption of the injector firing once per two engine revolutions.

I don't have the answer for TPI injector firing every one or two revs ... ...

Yes, just change 600 to 1200.

Sorry about all the other stuff - just in case someone wanted to see the math.

Jim

You are close, but not quite. Need to account for 2 engine revolutions per combustion cycle.
Your factor of 600 should be 1200. Injector time in milliseconds, giving DC in percent.

The time for...