Dmartin_1 Posted March 16, 2007 Share Posted March 16, 2007 Hi if you buy a rebuilt ECU do you have to change the chip from your old one? 1985 300zx non turbo automatic. I bought a ECU from autozone and someone said I need to change the chip. If so can I do it myself or send it in to change it. Quote Link to comment Share on other sites More sharing options...
naviathan Posted March 16, 2007 Share Posted March 16, 2007 In 1985 I don't think there was a chip that you could change out. I think it's a pretty straight forward design. Quote Link to comment Share on other sites More sharing options...
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