2G Stock ECU installation for stock GST

[Junzu]

Picked up a 97 GST stock ECU, I have stock 97 GST. I have never done work with ECUs before, I was told I could just take old one out, plug new one in, and ready to go, with no tuning required!

Just wanted to make sure, if there's anything else I would need to do plz let me know, as I've said before never interacted with ECU. Here is photo of ECU. Also didn't find thread on direct installation for 97.....

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[dustyboner]

Just plug it in and your good

 

[Junzu]

Just plug it in and your good

Dumb question but do I need to let it run for a little while or anything? I really don't know much about the ECU

 

[pauleyman]

Dumb question but do I need to let it run for a little while or anything? I really don't know much about the ECU

Just get in and drive. If anything runs different it may just be minor fuel trim adjustments that will happen during the first drive. No different than had you installed a new battery in the car.

 

[Junzu]

Is this normal? Stock 97 GST ECU, stock 97 GST. When stopped in neutral idle is normal but slightly below standard 750 at around 500- car almost wants to die when in neutral while moving. All other gears normal

Here is pic of new ECU before I put it in

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[Bud92gsx]

Depending on your answer.
You say wants to die in neutral. Do you mean wants to die when u push the clutch?

 

[Junzu]

Yes, but question. You say wants to die in neutral. Do you mean wants to die when u push the clutch?

No only when in neutral while driving, but problem resolved