Barry E Spires

I have an issue with my odes. It will start up and run but when you give it gas it stumbles and cuts off. I have replaced the fuel pump,fuel filter, fuel injectors, mass air flow sensor,idle air control,throttle position sensor,air filter,spark plugs,and throttle body also I have no vacuum leaks either. I have even replaced the ECU. Does anyone have any idea about what could be wrong? Engine only has 1045 miles on it