How to Identify an EPROM ECU [Merged 5-9]

[95AWD6Bolt]

I need to check for sure if an ecu is an eprom is an ecu before i buy it. I wont be able to take it apart before i buy it.
I remember a few years back there being a website that listed the codes on top of the ecu's that said if they were eprom or not.

thanks in advance.

i attempted a search but couldnt find what i wanted.

 

[No_Skillz]

It has an E.

And if you open it, there's a chip.

Pretty hard, hm?

http://www.dsmtuners.com/forums/newbie-forum/296413-eprom-ecu.html

 

[95AWD6Bolt]

Its getting shipped, soooo i cant.


I just remember a site that listed the eprom's by serial number.

The code one the one that I am buying is E2T61672

 

[snowborder714]

For 2g's there's only 2 ECU codes that are usually associated with EPROM ECU's.

MD312464
MD309947

Here's 2 links that might help.
epromid [ECMTuning - wiki]
Eclipse Talon Laser Galant 3000GT Stealth ECU ID Reference (if the cell has a 3rd line, that is the code found on the EPROM chip)

 

[tsiboostin]

If you are not able to open it before you by it I'd be a little cautious. Covers can be swapped. Are you buying it from someone online?

 

[95AWD6Bolt]

For 2g's there's only 2 ECU codes that are usually associated with EPROM ECU's.

MD312464
MD309947

Here's 2 links that might help.
epromid [ECMTuning - wiki]
Eclipse Talon Laser Galant 3000GT Stealth ECU ID Reference (if the cell has a 3rd line, that is the code found on the EPROM chip)

thanks. the first link is what i wanted.

 

[snowborder714]

Who are you buying the ECU from? Almost anyone should be able to open it up (it's only 4 screws) and tell you if there's a chip in the bottom right corner, or even the code on the chip. I've bought a bunch from junk yards all over the US by phone/e-mail and they have no problem opening it up, with some even sending me pictures. And you better be getting a really good deal on it if you're buying it sight unseen.

 

[95AWD6Bolt]

What I meant was that I, myself cannot open it up. I have a picture of it but i also wanted the code just to double check.

 

[eoseitz]

I was wondering if this ecu is an eprom. I know there is supposed to be an E on it somewhere to indicate this. Is it the E in the second string of characters, or should there be an E where the A is in the bottom right?

You must be logged in to view this image or video.

 

[MichaelSuch]

Only for sure way is to open it up and find out.

You must be logged in to view this image or video.

You must be logged in to view this image or video.

 

[steve]

I was wondering if this ecu is an eprom. I know there is supposed to be an E on it somewhere to indicate this. Is it the E in the second string of characters, or should there be an E where the A is in the bottom right?

You must be logged in to view this image or video.

Unlikely to be an EPROM.

On the 1990 ECUs the absence of any letter where that one has the "A" indicates a EPROM case. The A means it's a non-EPROM ECU.

Since it's less and less likely that nobody has ever opened the cases you always have to check the board regardless what it says on the case.

 

[rick_dsm90]

If its not just send it to ECMTUNING.com

they can hook you up if you want to run link

 

[805eclipse]

Car is at the shop so i cant open it up to look. the model is MD128625 its a 1990 federal ecu and i need to know if its eprom so i can change the software to california to match my car for emissions.

 

[V8KLR]

You are gonna have to open it to find out.

 

[Dsmj89]

Take it out and read the label on the ecu, if it has en E then yes.

 

[snowborder714]

According to this site, no.
epromid [ECMTuning - wiki]

But according to this site, yes.
Eclipse Talon Laser Galant 3000GT Stealth ECU ID Reference

Best way is to open it up to make sure.

 

[-TunedDSM-]

Yup open it up and look.

You must be logged in to view this image or video.

You must be logged in to view this image or video.

 

[90 TSI FWD]

Take it out and read the label on the ecu, if it has en E then yes.

Wrong info. I've had a couple ECUs with the "E" and they weren't eprom.

I've had 3 MD128625 ECUs. Never of which were eprom. Chances are yours isn't, but open it up.

 

[nightracer91]

Anymore you need to open the case to see what your ECU is. There are so many ECU's changing hands that what is on the outside doesn't mean a thing. I also used ECMTuning with my ECU. Those guys are great over there! Definate recommendation there!

 

[twdorris]

Someone asked me for an update to this thread today, so I dug the ECU out and tested it again with ECMLink just to make sure. It does appear to function just like our '95 USDM EPROM ECUs. I don't see any reason why you couldn't run this in our USDM cars. I didn't go testing every single output, but certainly all the important ones seem to work fine. ECMLink reflash functionality works fine too (which depends greatly on a number of very specific hardware requirements), so this ECU really seems to be 100% compatible with the '95 USDM EPROM ECUs as far as I can tell.

Thomas Dorris
ECMTuning, Inc.

 

[rEclipserGST]

Just wondering, what was the reason to even doubt this was eprom? It has the E on the front of the case, and the Chip with the E on the bottom right. Explain authenticity for the Eprom please and thank you. I think All DSMers would like to know.

 

[twdorris]

Just wondering, what was the reason to even doubt this was eprom?

I think the original question was really how compatible the ECU was with the USDM cars. I know it was worded as an EPROM question, but people get terms mixed up all the time. It's certainly obvious from the pictures that it's an EPROM ECU. So that was never really a key question to begin with.

Explain authenticity for the Eprom please and thank you. I think All DSMers would like to know.

Sorry, I'm not understanding the request. What "authenticity" information are you looking for here?

Thomas Dorris
ECMTuning, Inc.

 

[Ceddy]

Someone asked me for an update to this thread today, so I dug the ECU out and tested it again with ECMLink just to make sure. It does appear to function just like our '95 USDM EPROM ECUs. I don't see any reason why you couldn't run this in our USDM cars. I didn't go testing every single output, but certainly all the important ones seem to work fine. ECMLink reflash functionality works fine too (which depends greatly on a number of very specific hardware requirements), so this ECU really seems to be 100% compatible with the '95 USDM EPROM ECUs as far as I can tell.

Thomas Dorris
ECMTuning, Inc.

Did you copy the image off the eprom?
I'd be interested comparing it to the EC95 "Brazilian", for communications stuff.

Any idea which market it was made for?

 

[Killa_dsm]

Did you copy the image off the eprom?
I'd be interested comparing it to the EC95 "Brazilian", for communications stuff.

Any idea which market it was made for?

Since I sold the ecu to the original poster come to find out the ECU was from a Japanese Eclipse.

So all the settings on the ecu were exactly the same as USDM ecu's?

 

[rEclipserGST]

I think the original question was really how compatible the ECU was with the USDM cars. I know it was worded as an EPROM question, but people get terms mixed up all the time. It's certainly obvious from the pictures that it's an EPROM ECU. So that was never really a key question to begin with.


Sorry, I'm not understanding the request. What "authenticity" information are you looking for here?

Thomas Dorris
ECMTuning, Inc.

Disregard my last question, I was under the impression that they were learning towards "Is this a Fake Eprom?" But I understand now. Why not just try and Run the ECU anyway? Is there any harm it could cause if it wasnt compatible? And if it was NOT compatible.... wouldnt your car just not start to begin with?