I received my engine last week. It's a jdm s5 Turbo and I couldnt tell right off the back who and what type of ECU this is. The sticker looks like it pealed off over time and there are kanji or katakana writings on stickers. Could one of you experts in wiring/electronics possibly tell by the connectors if this is the n370?

I know most of you will say "Well, it came from Japan it has to be a n370" but I just need to verify.

Take a look at the images attached. If the pictures are good enough, I could take some more.

Thanks in advance,
Luis

 

the n370 ecu was never available in japan. the s5 jdm ecus were n374 and dont usually work with our cars.

 

Understood, well. With that being said can you tell what type of ECU this is? I can crack it open if needed. I do know for a fact that it came from a jdm engine - not sure how much help that is. If what you say is accurate, then it's leading me to believe its a n374. In which you say isn't functional with us spec, correct?

Thanks for your reply!
luis

 

u just gotta try it.. its hit or miss from what i read on these forums, some people n374 is fine, some people its not.

 

It's definitely a N374 J-spec S5 ECU.

The design says it's from an FC, and the plug shape says it's from an S5.

And like the others said, N374 in a US-spec car is hit or miss. From what I've read, it's usually the re-chipped knightsports N374s that end up working. Get someone to translate those Japanese characters, and they might say it's been chipped. Or they may just be stock "do not open" stickers or something similar.

 

open it up and look at the chips, you should be able to tell if it has a chip on it easily. JDM tuners wouldnt put their chips in ECUS without putting some sort of badge on it lol