Hey guys,
I own a Nissan 350Z and I used to tune my WRX which I sold not too long ago. I did some poking around and it turns out that Z's ECU is based on a Hitachi chipset, very similar to the EVO. I am not certain how close they are as far as architecture is concerned. I tried to to crack the ECU open to visually examine it for clues but it's well sealed in the metal case and I can only pry it open slightly without damaging something. I don't want to force the issue as I fear I will break something vital and give myself a very expensive bill.
So, my question is, since openECU supports EVOs, and since the Z ECU is reportedly very similar, how ECu specific are the download procedures? I'm a programmer so I understand the complexities of computer software. I guess I am trying to gauge the chances of me being able to plug the cable in and download the ROM off an ECU that may have the same instruction set as a one that is already supported. Is the ROM download car maker protocol specific? Subaru has SSM, Mitsu has their own. Is ecuFlash dependent on them specifically?
I know the ROM contents, I am on my own there but getting the ROM out is the first step at maybe cracking this thing. I do have access to IDA Pro so I am capable of disassembling the ROM to some extent.
Any info you guys can provide will be much appreciated.