I have a 2010 WRX and my engine broke. I have been looking for long-blocks but i just found EJ257. I got told that if i go from EJ255 to EJ257, I also have to change the ECU and wiring Harness. I want to know with someone with experience if that is true?
65000 miles. Turbo back, turbo inlet, custom intake and acces port running the acces port stage 2 from cobb for year and a half. No problem until I put the perrin turbo inlet.