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Specializing in the 3g CSM
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PostPosted: Sun Jun 28, 2020 6:45 am 
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Restricted Newbie

Joined: Fri May 08, 2020 1:11 pm
Posts: 17
Will you believe what I did? I hacked the ECU code so I can log faster! With the engine not running I can log 44 samples per second. When logging during normal operation (load cell, RPM, injector duty cycle, O2 sensor, ...) it decreases to 3-6 samples. Not that much.
I hacked the code and now I can log with 125 sampls per second with the engine off!
I've yet to test it in practice with the engine running. But that should translate to 8-20 samples per second.
Maybe I can increase logging speed even more!
It works perfectly fine with my active USB cable.


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PostPosted: Sun Jun 28, 2020 9:08 am 
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The Silent Administrator
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Joined: Wed Dec 24, 2003 3:32 pm
Posts: 9469
Location: Ottawa, ON, Canada
Pioneer!

Keep on going, as this could help many down the road.


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PostPosted: Sun Jun 28, 2020 2:25 pm 
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Joined: Fri May 08, 2020 1:11 pm
Posts: 17
Definately I will keep on going. This hack will also work on DSMs. Maybe even Evo 1-3. It still has to prove its usefulness in practice though. Then I'll try higher speeds. Hypothetically 125000 bits per second should be possible which translates to roughly 40 - 50 samples PER SECOND during ordinary driving.

Meanwhile I looked around for the rev limiter. I think I found it but have yet to prove it. The code ist much more like the Evo code rather than the 1G DSM's.
Stupid disassembler constantly kept misinterpreting opcodes although I have to admit Motorola 68XX instruction sets appear to me as an utter bloody mess!


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