Wrong ecm

dzx · Post by **dzx** » Sun Jan 22, 2006 7:43 am

So how big of a difference would it make if say an ecu for a '97 legacy was put into my '93 legacy SS?

MPtyza · Post by **MPtyza** » Sun Jan 22, 2006 12:50 pm

Wouldn't there be a problem with the '97 ECU being OBD2?

Splinter · Post by **Splinter** » Sun Jan 22, 2006 4:19 pm

And isnt the 97 non-turbo?

vrg3 · Post by **vrg3** » Sun Jan 22, 2006 6:05 pm

The prospect seems absurd. Where do I even start?

Its connector is completely different. You'd have to hand-wire several dozen connections. It also doesn't mount at all in the same way.

It's meant for different injectors and a different MAF sensor. I don't think it has the logic to detect the different MAF sensor. It would basically be overfueling all the time, by varying amounts at different airflows.

It may run in some type of limp-home mode since it would have active OBD-II trouble codes for stuff like the rear oxygen sensor, EGR stuff, and fuel pressure sensors. If the Check Engine light is connected to the ECU it's probably on all the time.

dzx · Post by **dzx** » Sun Jan 22, 2006 9:20 pm

The CEL light is on all the time, when they checked the codes, there were five of them and the guy said they shouldn't be on my car. Then he checked and said it was for a 97 legacy. This was at super rupair. The guy at Quality Auto sound said they usually have the dealer do the install.

vrg3 · Post by **vrg3** » Sun Jan 22, 2006 9:31 pm

It's hard for me to wrap my head around a dealer doing the kind of unusual work necessary to make a 97 ECU fit in a 1st-gen.

How did he even check the codes? Did the dealer also install an OBD-II connector in your car?

This can't be right...

dzx · Post by **dzx** » Sun Jan 22, 2006 10:13 pm

He plugged the computer into the green connector under the dash. This seems really weird, but it would explain why when i put the 550 cc injectors in, I had to turn the afc to -50% to get the car to run ok.

The intake manifold on my car is off of a '97 legacy, could he have gotten a reading from that somehow?

Post by **Legacy777** » Sun Jan 22, 2006 11:15 pm

Unless they rewired your entire car, I really doubt the guy knows what he was doing.

dzx · Post by **dzx** » Sun Jan 22, 2006 11:36 pm

Yeh, i should be able to get the numbers off of the computer and have them checked out correct?

Post by **Legacy777** » Sun Jan 22, 2006 11:37 pm

yes. Post the numbers.

dzx · Post by **dzx** » Sun Jan 22, 2006 11:52 pm

ok, here they are in the order they appear on the bottom of the computer, hopefully they are the right ones

22611 AA694
MECF-M61 M8
2831 A1

The m8 is seperate and off to the right hand side

vrg3 · Post by **vrg3** » Mon Jan 23, 2006 12:11 am

That's a Legacy Turbo ECU.

dzx · Post by **dzx** » Mon Jan 23, 2006 1:29 am

Wonder what the guy at superrupair was smoking then

Post by **Legacy777** » Mon Jan 23, 2006 4:04 am

dzx wrote:Wonder what the guy at superrupair was smoking then

crack!

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Wrong ecm

Wrong ecm