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Old 12-24-2012, 12:30 PM   #1
Sillymoose
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Default Computer swap help

I just recently bought my first subaru impreza. It is a 02 impreza wagon ts. My question is, I have a 04 sedan impreza RS as a parts car that has a chipped computer. Will the computer from the RS swap into the TS with no problems? I know most of the other parts match up, Just not sure when it comes to computers in cars.
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Old 12-24-2012, 12:36 PM   #2
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Do you mean reflashed computer? No body makes "chips" for Subarus, that is to say no reputable companies make chips for Subarus. Any chip you buy for these cars will at best do nothing and at worst blow up you motor.
As for the compatibility of the ECUs otherwise, I don't know.
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Old 12-24-2012, 12:52 PM   #3
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Well the guy just said chipped. So maybe he meant reflashed. Like I said I don't know much when it comes to the computers in cars. All I know is he said the computer in the sedan was made to increase the cars performance before his friend wrecked it, and gave him the car I know own as a replacment. He didn't want a wagon model I guess.
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Old 12-24-2012, 01:07 PM   #4
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Quote:
Originally Posted by OUScooby
Do you mean reflashed computer? No body makes "chips" for Subarus, that is to say no reputable companies make chips for Subarus. Any chip you buy for these cars will at best do nothing and at worst blow up you motor.
As for the compatibility of the ECUs otherwise, I don't know.
There are actual ROM chips for the earlier 20G and K ECU.

Rob on this forum makes them and they are very good.
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Old 12-24-2012, 03:03 PM   #5
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Quote:
Originally Posted by i_c_the_light View Post
There are actual ROM chips for the earlier 20G and K ECU.

Rob on this forum makes them and they are very good.
I actually did not know that. Without saying so I was limiting my statemtn to the GD and newer Subarus anyway, OP has an '02.
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Old 12-24-2012, 07:45 PM   #6
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Well whatever he did to it. Its a better computer then whats in it now. I know the engine is the same in both cars. So I don't see why not. Just god only knows when it comes to car computers.
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Old 12-24-2012, 10:25 PM   #7
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Quote:
Originally Posted by OUScooby

I actually did not know that. Without saying so I was limiting my statemtn to the GD and newer Subarus anyway, OP has an '02.
The ROM chips became obsolete once the ECUs became reflashable. So really a chip on that ECU is pointless.
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Old 12-25-2012, 06:25 PM   #8
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So noone knows if it can be swapped? They are the same engine so I don't see why...
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Old 12-25-2012, 07:13 PM   #9
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Quote:
Originally Posted by Sillymoose
So noone knows if it can be swapped? They are the same engine so I don't see why...
They probably are but a chip on an ECU that can be reflashed is pointless.
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Old 12-25-2012, 08:13 PM   #10
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I was always told that if you swap the ECU it should be the same year. otherwise you have problems
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Old 12-25-2012, 08:38 PM   #11
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Well idk if its chipped or reflashed. He could have just meant reflashed. All I know is he said the RS out performed the TS and the only difference was the computer.
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Old 12-26-2012, 06:31 AM   #12
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The only way to know if it will physically interchange is to get a diagram of the ECU connectors, and the Input/Output chart. Check to see if each pin is assigned the same function. Even then, there's no guarantee it will work.
If the "chip" is one of those "Increase Your Power by 50HP for $$69!" chips, I'd stay with your stock ECU.
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Old 12-26-2012, 10:51 PM   #13
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I would say it will work. **** stop being a girly girl and try it.
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Old 12-27-2012, 11:41 AM   #14
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Quote:
Originally Posted by Sillymoose View Post
Well idk if its chipped or reflashed. He could have just meant reflashed. All I know is he said the RS out performed the TS and the only difference was the computer.
Perhaps you should figure out what it is exactly that you have before putting it in your car.
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Old 12-27-2012, 04:34 PM   #15
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I won't know 100% till i pick up the parts car mid january. The front end is all torn up and has to be flat bed home. I was planing on trying it anyways. But I figured I should get some advice on a Subaru forum before in case someone knows to do it or not.
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