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Can anyone tell me if the 929 ecu MCJ-641 is any diffrent to the MCJ-671 I believe they are the same year ???? planning on changing 671 to 641 and would appreciate to be told of any possible problems that may occur ... thanks guys:help:
 

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Can anyone tell me if the 929 ecu MCJ-641 is any diffrent to the MCJ-671 I believe they are the same year ???? planning on changing 671 to 641 and would appreciate to be told of any possible problems that may occur ... thanks guys:help:
The 671 is the US ECU.
Is the 641 for the Cali model maybe or is it non-US?
 

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thanks for the info bladeracer , thought you may know !!! The 641 is a uk (european) spec ecu but was unsure of the 671 , if its U.S model then not compatable as it has no hiss system i take it ??
 

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thanks for the info bladeracer , thought you may know !!! The 641 is a uk (european) spec ecu but was unsure of the 671 , if its U.S model then not compatable as it has no hiss system i take it ??
Yep, different connectors.
 
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