RB,
Yes you have to allow for pumping losses etc. Did you read [ can you read? ] post # 13.
And apparently you are not aware that there are 'real world' methods to calculate the amount of the fuel the engine will require [ post #17 ]. You cannot make the engine use more than it needs....
I have great respect for Steve Morris. I'm sure when he burns out his first pump because it can supply 10 times the amount of fuel his engine needs....he will modify his statement.