Trvpstar

Hello all, I recently picked up another hatch after all the craze. This is my 3rd 240sx but 1st sr20det. I bought the car just cranking (bone stock) all it needed was an ignitor chip, easy fix. I got carried away and upgraded to a FMIC, 4? exhaust (accidentally got it instead of normal 3?), isr turbo elbow, isr 255 fuel pump. Ever since I upgraded the turbo elbow my car has been wanting to break up at 5k rpm. Just before that it drove fine and boosted well, the car has new plugs. Do I need to upgrade engine management at this point? I?m running stock t25 and stock boost, I?m not looking for more power just want to keep it as simple as possible.


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