Poor Response On Acceleration

Check mass airflow sensor (if equipped) for proper CO setting (if adjustable) and for broken filament. Check mass airflow sensor resistance.
Inspect induction system. Inspect for leaks downstream of throttle valve. Inspect duct between mass airflow sensor (if equipped) and throttle body.
Check idle speed.
Check injector operation and opening duration. Inspect injectors for leaks.
Verify fuel pump is okay. Check fuel pressure and pressure regulator. Inspect fuel line for leaks or restrictions. Check fuel filter.
Ensure electrical harness, connectors, and wires are not broken or loose. Check all input signals to ECM.
Check temperature sensor(s).
Check oxygen sensor.