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> He then disassembled the firmware, which looked quite a bit different than disassemblies of normal code. It looked somewhat like electronic schematics had bee
by bri3d 11y ago
> He then disassembled the firmware, which looked quite a bit different than disassemblies of normal code. It looked somewhat like electronic schematics had been turned into code, rather than spaghetti-like output from other kinds of programs, he said.
The actual logic diagrams and definitions of this data for Bosch ECUs (sans the emissions cheat, obviously) can be found in the "Funktionsrahmen," leaked but easily available from many VW tuning forums online. It's quite fascinating and worth a look for anyone interested in how modern ECUs work (it's a far cry from the oldschool "fuel table" style of engine management).
- semi-extrinsic 11y agoWow, that's an acronym soup if I ever saw one: http://s4wiki.com/wiki/Tuning http://s4wiki.com/wiki/Tuning
- bri3d 11y agoWait until you see some of the logic diagrams (this is the one for intake air temperature sensing): http://imgur.com/KWob8Xf http://imgur.com/KWob8Xf
- wnesensohn 11y agoThese look like diagrams from Bosch Otto ECUs (ME series). FWIW, the ECUs in question (EDC17) use much more descriptive names: Epm_nEng - engine speed; InjCt1_qSetUnBal - set quantity for first injection (roughly); VehV_v - vehicle speed I much prefer the EDC17 style, but your mileage may vary.
- bri3d 11y agoOh, you're right! I've never owned a diesel so I've only looked at EDC17 in passing. :) The variables certainly aren't as cryptic... I think even a native German speaker would have trouble with the ME7 ones.