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ECM compatability

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are the ej computers compatable with the different engines thoughout the years?I have a 91 EJ22 computer and want to know if a 89-94 ej22 will work or does it have to be a 90-91 ej22?thanks

are the ej computers compatable with the different engines thoughout the years?I have a 91 EJ22 computer and want to know if a 89-94 ej22 will work or does it have to be a 90-91 ej22?thanks
Any 89-94 EJ22E computer should work. Note: N/A engine to N/A engine..no N/A to Turbo ECU's or Vice-Versa.
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I just heard a rumor that 90-91 ECU's are different from 92-94.this one site that does vanagon conversions said that...supposedily they sell harnesses with all of the needed wires labeled..

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