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Old Feb 10, 2018, 02:33 PM
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E39a Galant

can .HEX EVO7-8 ROMs be writen to EPROM chips and installed in a JDM e39a galant VR4 ECU?
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Old Feb 13, 2018, 01:25 AM
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The early Galant VR4s have a twin board ECU which is non dataloggable.
The later ones (from about 1990) are similar to the evo 1 - 3 ECUs and can be data logged.
There's always been off the shelf eproms available for those, I used to copy them 15 or so years ago.
As for copying an evo 7 or 8 rom, well most things are possible if you know what you're doing but they use a different processor. It makes more sense just to swap in the whole ECU, wiring, AFM , injectors etc, then you get OBD2 as well as a flashable ECU.
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