Nissan ECU Info

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10-20-2004, 05:35 PM

Bernardd

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Nissan ECU Info

For those that are interested. This lays out pretty much everything for Nissan ecu's upto OBD II.
http://cherrypicker.tripod.com/id10.html
A romulator, a laptop and you now have a fully programmable ecu. You should include a wideband as mandatory as well.
Bernard

10-20-2004, 06:05 PM

DA-MAX

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very nice page...explains a lot that I didn't know as far as understanding the values in a hex editor rather than a more "user friendly" rom editor. good ****!

10-20-2004, 08:29 PM

densetsu

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excellent link, i was just thinking about doing exactly this in class a couple of hours ago. interesting that this thread was right here for me as soon as i got online.

10-21-2004, 02:34 PM

Boosted Maxima

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I'm just waiting for my injectors to come along then It's time to get the romulator and live edit up and running. My intercooler should be welded up tonight and installed this weekend. Thanks for the great link with great info!!!!!
You the man!
~Scott

10-22-2004, 11:12 AM

pawnstar12

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yeah thats what im talking about i need to raise this damn rev limit

10-22-2004, 12:56 PM

MardiGrasMax

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So if I have a JWT ECU will this allow me to edit their program?

10-22-2004, 12:59 PM

DA-MAX

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Quote:

Originally Posted by MardiGrasMax

So if I have a JWT ECU will this allow me to edit their program?

tecnically you should...you wanna borrow my rom burner?

10-22-2004, 01:05 PM

pawnstar12

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wouldnt you be removing the jwt eeprom and replacing it with that one?

10-22-2004, 01:07 PM

DA-MAX

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Quote:

Originally Posted by pawnstar12

wouldnt you be removing the jwt eeprom and replacing it with that one?

he would remove the current rom, read it in the burner,make his changes, burn a new chip or reburn(if its a flash rom 29cs are great), reinstall the rom and go

at least thats how mine works...since I'm still lacking an emulator

10-22-2004, 02:05 PM

#10

Bernardd

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Quote:

Originally Posted by MardiGrasMax

So if I have a JWT ECU will this allow me to edit their program?

You could. I've not seen a JWT ECU with a daughterboard so i don't know what type or size of prom is on the board. Not all proms are the same. Some are 40 pin and or specialty items to prevent curious types such as ourselves. Need a pic of the daughterboard or at the very least the #'s on it and the # of pins.

10-22-2004, 08:08 PM

#11

Max97Stick

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so i could use these for my 97 5 speed sc

10-22-2004, 09:07 PM

#12

Max97Stick

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so if u could mess with it can u do it if so who could ill be intrested in a ecu

10-23-2004, 08:46 AM

#13

Bernardd

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Quote:

Originally Posted by slammed95

If you already have an ecu modified by TS or JWT, you'll be able to change the settings. This won't work for stock ECU's.
The addresses are different for our ecu. The 300zx ECU also has parameters for things that maximas don't even come with. If you're gonna mess with the setings, hopefully you know what your doing. And don't forget to make a copy of the original .bin!
BTW, the eprom used by TS is a 40pin which has been discontinued.

Most of the extra parameters in z32 ecu aren't populated with usealble data in the maxima ecu. However it's laid out the same way. What needs to happen is someone with a JWT daughterboard needs to take the time to compare it to a stock ecu to see what hardware changes have been made. Many things can be revealed.

10-23-2004, 09:16 AM

#14

MardiGrasMax

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Quote:

Originally Posted by DA-MAX

tecnically you should...you wanna borrow my rom burner?

Oh boy!

I have two chips actually, my old 516 with the cold start issue and the fixed on. paul could let us look at his 370cc program. Lets hook up

10-23-2004, 05:39 PM

#15

MardiGrasMax

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The JWT chip is a 40 pin chip. The part number on the bottom is this

2G1767-1-34005B
1-M 2G0307

Where can I get reader and a burner for this chip?
Is their any info out their on this in JWT ECU's as far as reprograming?

10-24-2004, 11:37 AM

#16

DA-MAX

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yeah that definently wont fit mine...

we'll have to figure something else out...

10-24-2004, 12:34 PM

#17

Bernardd

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If someone wants to buy a 40pin adapter I'll borrow them my reader. PM me if interested.

10-24-2004, 12:41 PM

#18

DA-MAX

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bernard, who sells adapters? I looked on Batronix site, but wasn't sure...any ideas

10-24-2004, 02:08 PM

#19

Bernardd

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www.eetools.com makes one for my burner. At least they used to. I haven't checked for a while.

10-24-2004, 02:52 PM

#20

DA-MAX

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not an adapter, but a programmer that can support 40 pins....I don't know **** past the Batronix burner and 28pin chips I use, so this is all new to me...

http://www.melabs.com/products/epic.htm

10-25-2004, 06:51 AM

#21

DA-MAX

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the xtronics burner also has a 40 pin adpater setup...

http://xtronics.com/memory/EPROM.htm#EP-16

10-25-2004, 08:10 AM

#22

superdave2

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I use a Willems version PCB35 progrmmer for my SR ROM tuning. It is cheap (iirc $45 shipped from Thailand)
Willems site

It will only burn 32 pin chips but the Willems adaptor is only 4bux!
40pin adaptor

10-25-2004, 08:34 AM

#23

MardiGrasMax

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Thanks Dave, thats a great price.

Im new to this so let me qualify a few basic things.

With this device I will be able to read the code in the 40pin chip and view it on a PC. Then edit it and re burn the chip?

Where can I get blank chips, so I can do a few different programs?

How do you figure out what data is for what parameter?

10-25-2004, 08:46 AM

#24

Bernardd

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I have access to a couple of willems burners as well. Now we need someone to take an eprom and send it to superdave2 ( MardiGrasMax?). That's assuming superdave2 is going to pick one up. (I can pick one up if needed, and if someone will send me an eprom) We also need to see the underside to see if a jumper has been moved. In the sr/ka ecu's there's a jumper that needs to be moved from cj1-cj2. Needs to be seen with a stock ecu otherwise it's almost impossible to notice any changes.
Bernard

10-25-2004, 10:19 AM

#25

MardiGrasMax

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Underside of the factory ECU board?

10-25-2004, 10:56 AM

#26

Bernardd

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Correct. Here's a link to how it looks in the sr/ka board
http://www.sr20tuning.com/installation.html

10-25-2004, 12:56 PM

#27

superdave2

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I'd be glad to help out with this. I do not have the adapter, but I don't mind buying it cause I will probably want it later anyway.

I would be very surprised if there was not a jumper moved on the JWT ECU.

Actually... I30tmikeD (my brother) is comming down to visit next month. He has a JWT ECU so if people don't mind waiting, we can take a look at it then.

10-25-2004, 01:16 PM

#28

superdave2

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Quote:

Originally Posted by MardiGrasMax

With the programmer and software that comes with it, you can read and burn the eeproms. You will not really be able to edit it unless you have editing software (such as ROMEditor) I have this but I'm not sure it will work with the 16 bit chips (40pin). It works great on the 8 bit chips (32pin).

You can get get blank chips at Jameco.com - I'd strongly suggest the flash chips.

Now if someone could just reverse engineer the JWT PCB...

10-25-2004, 01:30 PM

#29

Bernardd

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Quote:

Originally Posted by superdave2

By the looks of Slammed95's board, there's another chip. Need to know what it is and how it works. Anyone else have a daughterboard without that extra chip?

10-27-2004, 05:33 AM

#30

Bernardd

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VQ binfile in this thread:
http://www.tangentrix.com/forums/vie...c883ecc924d1b5
What year did the VQ start? 95?
Bernard

10-27-2004, 06:37 AM

#31

superdave2

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We need to get the adress file too. Any ideas?

10-27-2004, 06:47 AM

#32

Bernardd

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Only what Eric pointed out to me in that thread. Wouldn't hurt to ask him. I've got no experience with that kind of lay out. Comparing the stocker to a modded binfile would be the next step. Have to do that in hex workshop or something similiar.

11-25-2004, 06:41 PM

#33

SR20DEN

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I am going to start copying and sharing software with the use of this.

http://www.xtronics.com/memory/EPROM.htm

11-26-2004, 02:23 PM

#34

mtcookson

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that's the way to do it. the guy that does the romulators used that thing as well for grabbing the info off my stock ecu.

he lives up right next to kansas city. i stopped by there so he could try figuring out some stuff with the nissan ecu's.

11-30-2004, 03:49 PM

#35

John at J&S

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This is why they make black epoxy.

12-01-2004, 08:25 AM

#36

Aaron92SE

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Quote:

Originally Posted by superdave2

I don't think they make a 16 bit emulator quite yet. It's in the works from what I hear. But what the SR20 guys do is solder in a daugherboard with two 8 bit EPROMs on it. Then they can burn their chips as needed.

I am in the process of getting this daughterboard in my ECU and in order to emulate two 8 bit EPROMs, most likely, I will need two 8 bit emulators connect together. I will be using the Zemulator software. Me and Ash Powers are working together on this. So I'm in good hands.

Here is the Zemulator link:

http://ashspecz.com/ashspec/zem/zem.htm

Here is where I ordered my daughterboard:

http://www.plmsdevelopments.com/daughterboards.htm