If its going bad, it will have somewhat the same characteristics of starving for fuel.
It could be intermittant. Check the filters first, then if you don't have a pressure guage, get someone to help and disconnect one of the feed lines and place it in a large container, then push the flap on the airflow meter with the key on.
You should have plenty of fuel coming out.... (not sure what volume it should be putting out though)
Remember, EFI systems have a lot more pressure than carb'd ones do, be careful.