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I did not see this mentioned and if it was, apologize for a duplicate. The contact pins in the multipin plugs at the ECU, can lose their spring tension and lose contact. A 1mm drill bit down the center of the pin should have a slight drag on it. If not, the tiny vanes can be repositioned to help regain good contact. I have had to deal with this and find it a major pain in the ass. How can a company that manufactures an expensive complicated engine management system, have inherently faulty wiring harness plugs. To me it ruins the whole thought of wanting that system. Enough things to worry about at the track without a built in failure.
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