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Old 07-26-2008, 11:43 AM
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mbtoloczko mbtoloczko is offline
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Re: Memory dump of ECU

Quote:
Originally Posted by b3lha View Post
Check this out! A guy from UKLegacy alerted me to it. A nice diagnostics and datalogging program for Windows that supposedly works with the SVX and other Subarus. Unfortunately it's not free, but it is cheap. I haven't tried it yet, but I certainly plan to have a look at it.

http://www.limitless.co.nz/

I can't help wondering if they borrowed some of our research for this. I don't see how else they could find the memory locations for the SVX without having access to an SVX to experiment with.
I've been using EvoScan with my Evo for about 1.5 years. I had been watching to see when he would add support for the SVX. Since EvoScan simply follows the SSM protocol, I doubt Hamish (EvoScan author) needed to see the guts of the SVX ECU. SSM I'm sure has a standard set of addresses it uses to read key operating parameters so it can work for any SSM-enabled Subaru. He probably doesn't even know if it really works with an SVX. He's just assuming that since the SVX uses SSM, EvoScan will work. What I'm curious about is the cable he sells for the SVX. I see that he sells a cable with a 9-pin plug. Is there a 9-pin SSM plug somewhere on the SVX? Its been too long for me to remember. All I remember were some diagnostic wires that had to be pulled and inserted into specific plugs to read error codes.

If you want to make the disassembly and ROM modification process easier and more accessible, I'm pretty sure that ECUFlash (free) can be used to read and modify the maps in the SVX ROM. You'll need to create definition file (XML-based) that defines the location of each map and the scaling of the values for the maps. You'll also need to find the unique identifier in each type of SVX ROM so that ECUFlash can differentiate between the various SVX ROMs. Here a link to the ECUFlash download:

http://www.openecu.org/index.php?title=EcuFlash
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Last edited by mbtoloczko; 07-26-2008 at 12:33 PM.
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