Are ECU's Interchangable

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Jan 25, 2010 | 05:46 PM

dabbdc@yahoo.com

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Are ECU's Interchangable

I want to get a spare ECU and have it chipped. Do I need the same part#?
I have a 551B? Forum members have offered me ECU's with different part#'s claiming that they were interchangable and I am sceptical.

Jan 25, 2010 | 05:53 PM

complacentsee

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As long as you get it chipped with the software designed for your car yes. You may need to change the coding on the ECU to make it work right on your car.

Jan 25, 2010 | 08:43 PM

dabbdc@yahoo.com

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Changing the coding

Quote:

Originally Posted by complacentsee

As long as you get it chipped with the software designed for your car yes. You may need to change the coding on the ECU to make it work right on your car.

So a chipped ECU for a B5 S4 manual can be used for a B5 S4 Tip? How does one change the coding??