I have a question: A mechanic I just recently met said since I have a used JDM engine and the original ECU wiring harness from the old 7mgte, that I need to "upgrade" by getting some new sensors so the ECU can read the signals it needs to operate the engine. Is any of this true? He wouldn't clarify which sensors he was talking about and he said there is about 3 sensor that needed to be upgraded..
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