This is a thread for gathering information on working with the ECU, i.e. editing its contents. It is not a tuning thread per se although this information could be useful to anyone who wishes to tune their car. Emphatically, this is NOT a thread on EFI or general theory of operation of a modern ECU. Rather the intention is to help people of different backgrounds to come up to speed on the hardware and software aspects of our specific ECU, just as I am trying to do. There is momentum gathering about this as more tools are becoming available and more information is being published. I'd like to acknowledge the work that Marc (Gouky) has been doing with this. All of us driving 2GR-swapped MR2's owe him a huge debt. Part of the intention with this thread is to give him some support in what he's been doing mostly single-handed so far. Some time ago Marc planted the idea of getting people to share information and collaborate on the ECU. Maybe this thread will give a push in that direction. Personally I have zero background or training in firmware, embedded systems, or electrical engineering. I am definitely not an authority on the subject. Every day of working with this I am reminded that the little knowledge I have is incomplete and inaccurate. I'm approaching this as a challenge and a learning opportunity. I'd like to invite anyone else who has information or knowledge in this area to join in contributing to the thread and help to make it more useful. If you know something, please make corrections and suggestions. How is this different from the other threads already here? This thread will have a focus on hands-on tools and techniques and how to use them. This thread will also attempt to catalogue information more systematically, as compared to the progress reports that are given elsewhere.
I'll use this first post as an index/table of contents for the topics that will come later in the thread. The index and the topics will evolve and develop over time. Here's a proposed TOC that might or might not be followed. These topics might not necessarily be addressed in the order listed:
1. Architecture
2. Communication protocols
3. Tools
4. The calibration file
5. Maps
I'll use this first post as an index/table of contents for the topics that will come later in the thread. The index and the topics will evolve and develop over time. Here's a proposed TOC that might or might not be followed. These topics might not necessarily be addressed in the order listed:
1. Architecture
2. Communication protocols
3. Tools
4. The calibration file
5. Maps