Why does the acceleration hesitate when then gas pedal is floored?

What is your question?

Once the car gets to about 2-3k RPM when the turbo is REALLY starting to spool, the car hesitates almost like the injectors are clogged or not enough fuel is making it to the motor possibly. I was told that the ECU might need to be flashed or tuned but I'm unsure. Anyone have any ideas? Thanks!