Loss of power diagnoses

Hope1441

Greenie N00B Member
So i recently picked up a 2013 speed 3 with 270000 km and i believed the engine to be knocking so i purchased a used motor and swapped my bolts ons and stuff onto it and swapped the motor i have the car running now but its way down on power and seems to not be running right around 2000-2500 rpm range the cars acceleration seems to just kinda hold steady and not accelerate linearly until entering full boost levels it also seems to be pulling boost at low rpm has stock k04 i had a code P0016 i cleared it and didnt see it come back but the timing was just done over and is properly timed wondering where i should start looking to fix this
 
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