trying to get a jdm f20 but i want to keep us eu any problems with that and if so is the harnesses diffrent or can i use the jdm ecu on the us harness?

 

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im pretty sure u can use the us ecu, plus the jdm is governed at 110mph

 

You will want to use your own harness for the JDM engine it will match your chassis harness.
It should not be a problem to use US ECU with JDM engine as long as the engine has all the sensors that the US engine has and as the above post says the JDM ECU will have a speed limiter on it.

 

thanks guys just got off the phone with jspec and they said the same, how is jspec i plan on getting my engine from them or hmotors which would you go with ?