i recently thru a rod and am now buying a new sti 2.5L short block for my '02 wrx. what do i need to do for the ecu seen as how it will be a hybrid motor(wrx heads with sti shortblock). any help would be great. i have searched for the answer and have had no luck that is why i am finally posting. thanx p.s.
i dont plan on getting anymore power than i already have
You can use the EJ20 ECU with the EJ25 short block and EJ20 heads with a reflash no problem..but I have also seen great success with using a reflashed ECU (ECUtek) with the UTEC...but if you are going to go through all that might as well get a standalone unit.