Okay guys so i saw my car has a p28 ecu but the engine is a d16y8 im having issues with it feeling really weak under 3k rpm do you guys think its bc of the ecu also what ecu should i get for my engine d16y8 i believe the car had a d16z6 i think the engine harness is stock too also the car used to be automatic

 

You need to chip the P28 and install a Y8 map. Check your PM.