Greg, fyi, the 240's use a completely different setup than the NX's. The 240's require a single, easily, available chip replacement just like the OBD1 honda's. No daughter-card necessary. Not all of the nissan's are the same. Just to clarify.

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Stevel, actually the later 240 ECU requires a daughter card to handle the additional processor of the OBDI ECU....I have modified both styles and will post pics later. I have not done and NX and would like to see the differences if you wanted to share.