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Excellent stuff. Thanks.

I'm researching the EEC-V PCM but material is woefully lacking in the public domain on these things. I've done GMP4s and MECS PCMs in the past but my "new" 2002 Mustang GT has my interest piqued. I...

Excellent... thanks.

Thanks Magnus...would be a handy feature.

Back to the PCM. A 27C256 EPROM stores all program and calibration data. In my PCM, the calibration data is largely stored in the first 3.6K of the PROM...

Yes, I believe so. As well as Mazda MX3s (Precidias), Millenias, MX6s/Probes (I4 MTX, V6), RX-7s (I believe) and so on.

Rats...I just wrote a really long reply with lots of stuff and when I hit...

A number of Mazdas (and some Fords) used Mazda's MECS-II (Mazda Engine Control System) PCME ("PCM") from the early 1990s until the widespread adoption of the more advanced OBD-II box in the 1996...

Looks great Magnus. Perhaps I'll write a little something up for the MECS-II (OBD-I) PCM to get the ball rolling there...

One idea is to expand to add an "imports" forum or two. While my humble hacking beginnings way back when were domestic (GMP4) and my next car will likely also be a domestic, I currently drive an...

Yep...for me, I was searching Google for "EEC-V flash programming" and ended up here. The name "PCM Hacking" in the top right corner set the hook.

Hi all. Though I've been hacking PCM on and off for fun since 1992, I only recently stumbled across this place. Name is Mike Palmer and I was one of the developers of the original "Turbolink" back in...