Fuel injection system flushing flow rates

A question for all of you seasoned mechanics:

I have a factory new IO-360-M1B with Pecision Airmotive fuel injection.

I have flused up to the fuel servo and get good flow rates. On the engine side of the servo, I am only getting 4.3 PGH with mixture full rich and throttle wide open. Is this normal? I am thinking it is normal with no airflow through the servo.

BTW, fuel pressure is 33 PSIG.

The servo varies the fuel flow as a function of the air flow and mixture control. With zero air flow, you shouldn't expect a high fuel flow out of the servo. I wouldn't start worrying yet.

Sounds right...

That's the about the same as mine with AFP servo.