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Hi my name is Mike,
Typically when you post here saying that you dealt with a specific expert about your engine issue, Other experts will leave the question for that person. Also, many experts will shy away from vague questions with no additional information about the engine and the issue. Since Tan hasn't responded I will try and help you...
Could you please post some details about your engine i.e year and model number, when the issue started, why you replaced the EMM, any other work done, and anything else you can add to paint a picture of what could be going on here.
If you respond back telling me as much as you can about the issue then I will be able to better help you.