The 022 ECU has a different ROM chip from the 022D. I can't remember exactly, but one has (I think) and 18 pin chip and the other a 24 pin. There are other differences, like the 022d has a metal shield covering the chip, where the older ones have a plastic shield. Don't know if the ECUs function and differently. It may just be that the later ECUs have more efficient circuitry. Todd '88 Westy David Jaffe wrote: > Folks, > > In a week I'll have an 022 ECU I no longer need, because I'm waiting to > receive an 022D with the Australian power chip in it, so this not an > academic question: > > I assume the O22D ECU housing itself and/or circuitry must be different from > an 022 ECU, because to handle the Aussi chip, you can't use the 022. So I > wonder - is the original 022D chip programmed better than the 022 chip? And > if it is, can you plug it into an 022 ECU and make a better combined unit? > > Thanks, > > David Jaffe > 1986 Syncro West'faux'lia > 1982 Diesel -> I4 Westy > Portland, Oregon |
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