[Diy_efi] making sense of ecu bin

Phil Hunter diy-efi at t-n-e.com
Mon Jul 8 16:16:38 GMT 2002


> Can anyone help with figuring out bin code from a hitachi ecm. The
> processor is a hitachi HD63B03YP. Is it possible to figure out where
> and what the bin contains, im after the fuel and ignition maps as
> well as figuring out the formulas involved when calculating using tps,
> rmp, cts readings. hotwire MAF, TPS etc.... Bosch L ecm configuration????
> any ideas about checksums, disasemblers etc... anything

Semi-educated guess is the uP is a Motorola 6803 core. Been a while, but
IIRC, Hitachi was/is a second source for Mot., using 63XX numbering in
place of 68XX, the 'B' is a faster clock speed.

HTHs,
philh
(digest)

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