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I picked up a re-manufactured ECM, part number 1227148, so I can start using a scan tool on my 1985 hotair Buick. It did not arrive with either chip in it. Can I use the stock chips from my '85 ECM until I get the right Calpak and Turbotweak or whichever chip upgrade?

Hello all , new to Buicks. I just purchased a 1985 Grand National. I have been reading up on this website and GNTType and am a little confused. Is there a scantool that works on the 1984 1985 ECM's? I have a pretty good feel for most of the work I need to do but the old electronics (and new...