ECU identification

[jdblood202]

How's it going everybody. So, I had a parts car that I recently stripped down, and it had this ECU. At first I didn't think anything of it, the car was originally equipped with a 4g37, so I just assumed that was the ecu for it. However, after doing a little reading, it seems that Colt guys are able to gain a little bump in power from their 4g15 motors by swapping the ECU, injectors, and MAF from a 4g37 motor. I have a 1991 Plymouth Colt hatchback with the 4g15, so I got a little excited. However. This is not a 4g37 ECU. It has no part numbers other than that sticker on the outside. Comparing the inside to other ECUs, it appears to be a 4g63 ecu, but seems to be missing a thing or 2, maybe a NA 4g63 ECU? Now I'm curious to figure out what it is, I'll post a couple pictures, if anyone can help me out I'd greatly appreciate it!

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[jinscho]

S/N on the board lines up with that of a Mirage Turbo.

 

[jdblood202]

Huh. Ok. I've been trying to Google pictures of inside 4g63 ECUs for a few hrs now and have not found one that matches the SN on the board. Guess I'll look at Mirage ECUs.

 

[donniekak]

Looks like some kind of non turbo 4g6x Dohc ecu.

 

[jdblood202]

Yea, I compared it side by side with my 1990 GST ECU, it has alot of similarities. I should've taken a picture of that also....Anyways. Whatever ECU this is for, the kid was "building" this car with a 4g37 block, DOHC 4g63 head, and I haven't ID'd the transmission yet, but it's stuck in gear.

 

[jdblood202]

S/N on the board lines up with that of a Mirage Turbo.

Where did you see this at?

 

[jinscho]

Where did you see this at?

http://www.4g61t.org/forum/viewtopic.php?t=9992#p67415

3rd post down. Took a lot of scanning to find that s/n in the list, but according to that post it’s out of an ‘89 Mirage Turbo.

 

[jdblood202]

Hm. What was the kid planning on doin??

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[donniekak]

http://www.4g61t.org/forum/viewtopic.php?t=9992#p67415

3rd post down. Took a lot of scanning to find that s/n in the list, but according to that post it’s out of an ‘89 Mirage Turbo.

That’s not a turbo ecu, it doesn’t have a knock board. The je number isn’t the ecu part number. It’s a pcb board number. The turbo and non turbo 4g ecu’s use the same board. The turbo model will have a knock board, different injector driver capacitors and resistors, activated path for the boost gauge, etc.

But all those traces are on the non turbo ecu’s, I used to convert them.

 

[jdblood202]

That’s not a turbo ecu, it doesn’t have a knock board. The je number isn’t the ecu part number. It’s a pcb board number. The turbo and non turbo 4g ecu’s use the same board. The turbo model will have a knock board, different injector driver capacitors and resistors, activated path for the boost gauge, etc.

But all those traces are on the non turbo ecu’s, I used to convert them.

Ok. That would make more sense haha.