KA ECU hookup to PC

[alchemist]

Does anyone know if there is a way to hook up the ECU to a PC like mustangs can?  I mean it would be a nice way to tune your car for boost etc instead of having to have JWT do it every time you make a mod

[chickenmanq]

I've heard of people doing that, but you have to get the program to read the Nissan coding.  That's expensive, if you don't have a #### good friend at Nissan.  It would be interesting to see if you could decipher the code by hooking it up to the computer, getting some sort of number/letter/symbol mumbo jumbo, then figuring it out by setting off particular things.  Like, disconnect the 02 sensor, and see how the gibberish changed.  Etc. Etc.  I think it would be kinda hard, maybe not possible.

[transient]

Yeah, definately too many variables there. I agree though, i would definately like to be able to tune my own ecu.

[alchemist]

i was curious but i guess its a longshot since our engine to begin with is a bastard child.  My money says JWT knows, but woouldnt want to go into that market because they would loose their monopoly on the Nissan ECU market in the US.  Anyone ever check what JWT does to the ECU....do they flash the eeprom or change circuit board values.  If they flash eeprom, anyone can read the binaries on that....get enough of them and you can determine what does what.....obiously this would be impossible from a cost standpoint to do since each ecu is  600$

[IceTekGuy]

this is really funny,
just 3 months ago, i started to create a program with my teacher to do just that, i say about 4 more months and it should be all set...

and just the other day i saw in a performance magazine, that they have a program for sale(it was an ad)which does just this...

[misnomer]

Definitely you'd need a program that knows the CPU commands. Machine language (what would be on the chips) is useless without a reference on what the CPU reads and recognizes. Anybody that feels like reverse engineering, be my guest. For the months of work it would take, I'd happily give JWT my $600 <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt=':p'>

[alchemist]

but remember you spend the money each time you get it reprogrammed......what happens when you want to turn up the boost, or change the MAF or injectors.....spend more money

[whateverjames]

this guy is doing something with an ECU. <a href="http://www.rpi.edu/~beresp/ecu.html" target='_blank'>http://www.rpi.edu/~beresp/ecu.html</a>

[gh6o6]

You can buy reprogramable chips that go into a the car ecu and the computer on your desk but i dont know if they have them for our cars. &nbsp;AEM makes it they have an ad in sport compact car the web site is www.aempower.com
hope that helps

[Archangel]

Sorry, just checked out the AEM site, and they don't make the reprogrammable for any Nissans.

Hi All.

There is a free programme available on a japanese web site. This covers most of the Nissan ECUs and was written as a DIY tool.
The older ECUs require an EPROM to be desoldered and replaced with a rewritten one.
Newer models require a small addon board to carry the new chips.

Not sure of support for the ka24 thingy as we only mess with SR20s and Ca18s over here. :-)

It is possible to plug in an emulator and write to the roms realtime from the PC if you wish. This is really only necessary during tuning though and a rom is written and installed for permanent use.

As with anything.... Everything is possible.

[alchemist]

can you point me to the site location?

<a href="http://www.925style.com/edittool_vb.html

" target="_blank">http://www.925style.com/edittool_vb.html

</a>