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ECU compatibility...

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ECU compatibility...

 

Will a Manual tt 95 (Series 4) ECU work in a same 91 (Series 1) car?

 

cheers...

 

No. I dont think it does. 8bit/16bit or summat different. LOL!

  • Quote

    That's an interesting question. The other way around certainly works but I'm not aware of anyone putting a more recent ECU in an older car. My instinct tells me that it will probably work. Of course most people do it the other way around because the old ECUs have fewer restrictions (emissions etc) and are far more easily remapped.

  • Quote
    • Like 1

    Yep, about '95 onwards are 16bit, pre that are 8bit. However, the ECU is a self contained device with the same inputs no matter which model, so I reckon either will work. You can't (easily) remap the 16bit ones though, so we have replaced two or three of the 16bit ECUs with remapped 8bit ones. Incidentally, people have said that even a base model 8bit is better performance than the 16bit one.

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