Quote:
Originally Posted by redpepperracing
Sorry, what is the sw number? Treat me like a 5 year old...  |
What tool are you going to use for read maps?
And what software are you going to use to modify the file?
To modify a file read from an ECU, you first need to define the maps you're interested in.
To do this, it's crucial to know the software and the upgrade software, as this allows you to know exactly which maps the ECU uses.
Also, many (paid) software programs allow you to purchase a template that precisely defines the maps that control engine management. Be careful with this because there are good templates and bad ones.
For reference, my car uses an intake air management map (QS) which, in turn, has 11 submaps; it's a 10x16 map (rows x columns).
What I mean is that if you open a complete eeprom file read from an ECU, you get a 512kb hexadecimal jumble (in this case, since the DMEs of the 986 usually have an AM29f400BT, in a more modern car you can find files of up to 9 megabytes).
It's very important to be clear about which bits you're modifying, otherwise the results can be disastrous.
I imagine you're familiar with WinOls. It's an editing software that allows you to load a template (DAMOS) from any source and modify the file. Be careful with this too; there are some very good and well-intentioned people who create it, but again, you have to trust that the DAMOS file is good, with the potential consequences that this can entail.
I prefer reliable software, like Alientech, Dimsport, etc.
They prepare good templates that are a very good starting point, and from there you can start testing and even create your own maps to improve the template.
Even so, as some users have already mentioned, these engines aren't easy to tune; you have to be very careful and precise.
I'm going to start a new thread because, if people are interested, there's a lot to discuss, and I can provide a how-to guide on how to safely read and write the files and give you a guide on how to modify them. I can also review your modifications before you write them.
Link to this post:
https://986forum.com/forums/performance-technical-chat/87685-i-want-modify-electronics-my-car-how-do-without-dying-attempt.html