Evo 8 ECU in 94 Galant Discussion

Well ive been collecting information for some time and I share this for everyone's knowledge.

Ive made the transition from Evo 8 ECU to 94-95 galant ECU harness, so we too can enjoy all flashing and tuning capabilities. It took some time, this is just a "prototype" conversion, I still need to figure out some of the AC pins. It is done from a GS model point of view - already running coil packs and knock sensor. I can do another one from S,ES and LS - running distributor, but that will be later.

Evo 8 pinout

http://i1006.photobucket.com/albums/...8ECUpinout.jpg

94-95 7g pinout

http://i1006.photobucket.com/albums/...lantPinout.jpg

Evo to Galant conversion

http://i1006.photobucket.com/albums/...8toGalant1.jpg

http://i1006.photobucket.com/albums/...8toGalant2.jpg

http://i1006.photobucket.com/albums/...8toGalant3.jpg

http://i1006.photobucket.com/albums/...8toGalant4.jpg

Now the best part: Since the Galant has 3 ECU plugs which are actually the same as the plugs of the Evo 8 ECU, and if the smallest plug (yellow) of the EVO ECU want there all pins would have matched. Still have to swap a few pins, but thats no biggie.

http://i1006.photobucket.com/albums/...4GalantECU.jpg

For Red and Blue plugs all numbers match, but still a couple of pins need to be added or swapped. If yellow wasnt there the green 71 for the Evo ECU would have matched the green 51 for the Galant ECU. So the entire plug except for the pin 73 MDP sensor and pin 79 Data link connector are identical (p'n'p)

Another view:

http://i1006.photobucket.com/albums/...94toEvo8-1.jpg
http://i1006.photobucket.com/albums/...94toEvo8-2.jpg
http://i1006.photobucket.com/albums/...94toEvo8-3.jpg
http://i1006.photobucket.com/albums/...94toEvo8-4.jpg

I can work on 96-98 Models if interested

Nice.

Ugh... MKo you are a god when it comes to figuring this shit out... We can experiment on my G if you want.. We need to get working on it!! I want it running by mid summer!!!!

do one on the 96 as i was looking into this even though i have a 2g ecu now.

Sweet..BTW, I thought you were going to use the GS ECU.

Excellent Work MKO...I believe there was a 95-98 evo ecu swap done by tom back in the day but it would be cool to see u do one..

he had 2g ecu

he said he upgraded to an evo ecu...

i got diagrams on how to go from a 2G ecu to a evo 8 ecu


http://i102.photobucket.com/albums/m...2002/2gecu.jpg
http://i102.photobucket.com/albums/m...02/evo8ecu.jpg

The color-coated pins indicate those that need to be swapped/changed/disconnected:

Swap pins 8 and 22
Connect pin 32 from the EVO ECU to pin 20 on the vehicle wiring for the eclipse
Connect pin 34 from the EVO ECU to pin 21 on the vehicle wiring for the eclipse
Disconnect pin 87
Disconnect pin 42

Ok, here it is.

Evo 8 ECU pinout

http://i1006.photobucket.com/albums/...8ECUpinout.jpg

96-98 Galant ECU pinout

http://i1006.photobucket.com/albums/...tECUpinout.jpg

Evo8 to 96-98 Galant ECU conversion

http://i1006.photobucket.com/albums/...toEvoECU-1.jpg
http://i1006.photobucket.com/albums/...toEvoECU-2.jpg
http://i1006.photobucket.com/albums/...toEvoECU-3.jpg
http://i1006.photobucket.com/albums/...toEvoECU-4.jpg

A very weird change of pins. The 96-98 ECU pretty much kept the same configuration as 94-95, but it has an extra plug (the smallest one). Even the pin numbers are switched

http://i1006.photobucket.com/albums/...OECUpinout.jpg


Another view of the conversion:

http://i1006.photobucket.com/albums/...96Galant-1.jpg
http://i1006.photobucket.com/albums/...96Galant-2.jpg
http://i1006.photobucket.com/albums/...96Galant-3.jpg
http://i1006.photobucket.com/albums/...96Galant-4.jpg

A bit info on OBD plugs used for flashing.

http://i1006.photobucket.com/albums/.../obd2_port.jpg
http://i1006.photobucket.com/albums/...shing_port.jpg

Found this on DSMTuners. Not my creation, but to keep everything in one thread I post it here. Big thumbs up for whoever did it.

1g ECU pinout

http://i1006.photobucket.com/albums/...MECUpinout.jpg

and the difference from 94 Galant ECU pinout. Looks very similar, ut plugs are switched from left to right

http://i1006.photobucket.com/albums/...lantPinout.jpg

Again Evo 8 ECU pinout

http://i1006.photobucket.com/albums/...8ECUpinout.jpg

1g DSM to Evo8 conversion

http://i1006.photobucket.com/albums/...oEVO8ECU-1.jpg
http://i1006.photobucket.com/albums/...oEVO8ECU-2.jpg

There is a small connector next to the DLC that resemble the ecu flash plug on the GS, not sure about the other models.

wow how did i miss this? sweet find MKO.

Just wanted to Bump this and say Awesome Work MKO,

I used this on a gs build and so far the ecu is getting power and it looks like everything will work.
Iam unable to flash the ecu though, I think it has to do with Evo/pin79, You specify "add" but did not know where the other end of the wire was to connect too.

After a bit of research I found that Evo/pin79 should be attached to pin26 on the Diagnostic Port.
http://evoecu.logic.net/images/e/ef/Diag-connector.png

Also Evo/pin62 should be connected to obd connector pin7
http://evoecu.logic.net/images/3/38/...tor-pinout.png

I haven't tried this yet but I will hopefully be able to test read/Write with Ecu Flash this weekend and post some results.

I got these pics and information from http://evoecu.logic.net/

im glad i was able to help

So who wants to do this to my GS to convert it to speed density?

Armandotech Its a bit of work but if you start a thread with a plan of how you are going to execute, I am sure people will chime in.

Havn't been back to update in sometime but the flashing works.... No start yet, just a bunch of sputtering and pops :(. Will be going over my wiring.