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Go Back   SR20 Forum > Vendor Customer Support > CalumSult (Archived for Informational Purposes) > ROM & ECU tuning file exchange



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Old 05-01-2006, 11:19 PM   #1 (permalink)
ClamSlut
 
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Reverse engineering the B13 ecu

What do you guys think of attempting to back out the entire schematic for the B13/S13 ecu? This is something that I think would be a great accomplishment and really help crack this ecu completley. Buuuuuuut, its a really really big task. I've done little bits and pieces as I've needed it, but to get the whole thing really is a job for a group. I figure if at least 5 people work on this it won't take very long to get it all done. And is there really a better way to spend an evening than hunched over an ecu staring at itty bitty pieces trying to read faint traces of writing? Combining all the documentation on the other hand...

So if your intrested, have a little freetime, I have a proposal:

-You must have a passing familiarty of circuits. Nothing big, if you've assembled a consult board or had any sort of classes thats plenty. Alternativley, if you don't know what the symbol for a resistor is but are willing to learn a little and can take very well documented drawings/notes, thats ok too. Having a background in electronics would be ideal, but the ecu is very well labeled, and just copying all the labels verbatim will work just fine.

-You must own a multimeter with a short (continuity) test. The kind where it beeps if you touch the leads together.

-You must also own a soldering iron, but it doesn't have to be anything fancy. The circuit boards are coated with a non-conductive (makes doing the beep thing hard) moisture barrier (think thin plastic layer) that melts if you touch the soldering iron to it. It also helps to solder wire jumpers between the top and bottom to keep track of where you are.

If the above applies and your willing to promise to spend at least a little of your time working on this, I will give you an ecu. You can document in whatever form is available, as long as you can e-mail or snail mail me a copy (hand drawings are just fine). Please label as best as possible, and make sure to copy exactly what is written on the ecu (especially get the component numbers!). If there are enough people intrested I'd like to devote a whole thread to this topic, and get to carving out the different sections of the ecu.

To request your ecu first post in this thread, then e-mail your name, forum name, mailing addy, and phone number (for FedEx) to calum@calumsult.com. Oh, and the ecu will more than likely be broken. And obviously I've only got a limited supply of junked ecus, when they run out thats it, sorry.
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Old 05-02-2006, 12:34 AM   #2 (permalink)
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I've cross-posted this thread in the KA ecu forum, its pretty much the same ecu. See thread here:

http://eccs.hybridka.com/viewtopic.php?p=2012#2012
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Old 05-02-2006, 12:50 AM   #3 (permalink)
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sent you an email... since your PM inbox is full.
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Old 05-03-2006, 09:32 PM   #4 (permalink)
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From this forum I've got Micra Pete and McCoy. ECUs will ship this Saturday.
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Old 05-04-2006, 05:10 PM   #5 (permalink)
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i dont know if anyone else can do this but if needed i can make electrical circuits on autocad
i dont know what everything means but i have a pretty comprehensive understanding but i can just reproduce "sketches for ya"
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Old 05-04-2006, 05:19 PM   #6 (permalink)
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i have no skill pertaining to any of this, but i just wanted to say goodluck!
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Old 05-04-2006, 08:07 PM   #7 (permalink)
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I ran Quad pcb machine (pick and place) for more than 3 years. Also had to inspect and identify all parts on boards. Did a lot of medical/gov't spec (mil spec) stuff. I could probably help you out.
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Old 05-06-2006, 01:17 PM   #8 (permalink)
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...and the first batch of junk ecus are out the door. If your getting one, FedEx should e-mail you a tracking number on Monday.

I've got two more ecus packed and ready to ship if anyone else is intrested in this project.

Now let the fun begin.
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Old 05-06-2006, 11:12 PM   #9 (permalink)
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But my DVOM doesn't beep!
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Old 05-08-2006, 06:26 PM   #10 (permalink)
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I have some electronics back ground and I am pretty good at reading\making schematics, just tell me what I need to do and I am in. PM me.
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Old 05-08-2006, 07:20 PM   #11 (permalink)
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I don't do PMs, sorry.

Just shoot me all of the above requested info to calum@calumsult.com and I'll send the last one your way. I'm shipping the last two I've got as soon as I get your info, so anyone else thats intrested in working on this will have to get your own, or wait until my supply builds back up.

Looks like there is going to be a wiki for this little project...
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Old 05-16-2006, 07:54 PM   #12 (permalink)
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calum, i have no clue but i can follow the lines and record what i find, i have the time to help. give me a region and i will draw however you need it. i have a b13 ecu, same as you just wired up for me.... i and use as the model..

ps. my usb cable cannot connect to the ecu? i guess i need a different brand?



pps- ecu i have is a11-b20-b57
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Old 05-19-2006, 12:33 PM   #13 (permalink)
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Calum,

Sorry for the late response. Definately count me in on this project. Anything you need specifically done?
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Old 05-19-2006, 01:30 PM   #14 (permalink)
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I am more than willing to give a hand, I have a basic background in terms of circuitry, but I helped my father build a candy tin headphones amp... so I have an idea of what I am doing.

If you need anyone else, definately count me in.
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Old 05-21-2006, 04:32 PM   #15 (permalink)
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Whats going on with this?
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Old 05-24-2006, 07:16 PM   #16 (permalink)
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I sent out a bunch of ecus, but haven't had the time to do anything yet. I'm guessing everyone else is in the same boat.
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Old 05-27-2006, 07:53 AM   #17 (permalink)
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I would have been right on it! lol
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Old 05-27-2006, 11:07 PM   #18 (permalink)
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I've been on the road the last few weeks and will be gone to Japan next month for a few more weeks... but, do hope to put some time on the ECU before my next trip.
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Old 05-30-2006, 06:09 PM   #19 (permalink)
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Calum,

Just saw this. Do you need any more help: You can definately count me in.
Please PM if you need additional contact info.
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