Adding Consult Port

[Rev_D21]

Is there a way to add a consult port to a 95 d21 ECM? I have read that the 92 U12 stanza box will work in the KA24e 240sx and has Consult capabilities but differs greatly from the d21 box. Thoughts?

[dimedriver]

Im not totally sure but it may just be a few wires to move around near the ECU.

The guys on http://hybridka.com are doing this with the SOHC 240sx's.

I think some pickups have the MAF inside the throttle body. You would have have to figure out the numbers for that MAF and retune the chip on the U12 ecu for it. Or just run the U12's MAF same as a 240sx's.

The U12 stanza also has a intake air temp sensor and can be modded to run a Map instead of MAF. Very nice for turbo or super charging. There are also mods to do full realtime tunning for the U12 ecu.

Compare the FSM wiring diagrams. http://www.nicoclub.com/FSM/24...G.pdf

PAge 4 for pickup maybe wrong year.PAge 7 for the stanza.

I have some extra U12 ECU's laying around, I will trade one that has been socketed for a Z24i four plug distributor. These are the FED emissions trucks 87-90 or so really hard to find in California.

-Avery

[Rev_D21]

I'll poke my head around. So if the u12 ecm is socketed can I use the original d21 eprom or should I burn an entirely new eprom with modified settings?

[dimedriver]

I know for sure that the early sohc D21's use a different cpu so the Code is different. Most of the dohc's used a 16bit memory bus(two chip daughter boards for chipping). I would check what flow rate the U12 stanza injectors were. If they are the same as the truck, just use it un-modded. Besides injector flow rates and style of MAF, the only other difference could be the cam. The Truck may have a cam set up for more low end torque which may require a different AFR map. It should be close enough to run but you may not have the best dyno pull with out chipping. I think some people on hybridka.com could tell you what math to do to the stock d21 AFR and ignition map to get it back to the same tune.

Here are some links to the realtime stuff.

board group buy: http://eccs.hybridka.com/viewt...p9383board Desing if you want to build one yourself: http://eccs.hybridka.com/viewt...vsram

Tunning software: http://eccs.hybridka.com/viewtopic.php?f=9&t=1770

I am currently working on putting a U12 ECU into my 510 with the stock L16 in it.http://picasaweb.google.com/anisbet/510EFI# Thats why I'm interested in a Z24i dizzy. Do you know if a KA SOHC distributor cap and rotor will fit on a Z24i 8 plug distributor body?

-Avery

[Rev_D21]

Thanks so much for your help on this. I have surfed HybridKA and it's full of great info but it's spread out all over. Guess I'll be piecing this together over time.

[dimedriver]

Gabe has already done most of the hard work.

http://eccs.hybridka.com/viewtopic.php?f=10&t=151

"Here is a .bin that I set up for 1992 stanza auto ecu running d21 with all factory d21 sensors, harness, maf, injectors etc. "

That should make your day. Now all that is needed is an ECU and some wire moving (maybe).

Do you have a chip burner and some soldering skills?-Avery

[Rev_D21]

I have the ECU and the wiring. I also have the bridge and some chips. I was hoping Santa might bring me the Burn2 for Xmas this year. Gabe seems to know his s*** and I enjoy reading all of his threads. He was born with a talent, that much is certain. Thanks for the info, I look forward to getting this thing going.

[dimedriver]

From that thread It sounds like you may not need the harness. Just the pig tail from the consult port and the pins to plug them into your harness. Its only 3 pins I can give you the locations and colors and stuff to night when I get home from work.

If you want a really cheap burner you can use an old network card and a linux boot CD.The card is a 3com 3c905 I think. They are really easy to find.This page is for DSM/mitsu stuff but its all the same when burning the chip.http://esm.logic.net/public/dsm/ecu-flashing.html

The chips most people use are getting really hard to find. I bought 5 last time I ordered and wish I bought more. The 27sf512 is gone from digikey and futureelectronics. Moates has it but they charge $5.You need an offset on teh 27sf512's of 0x8000. because its a double size chip. I think you can also just lift pin 1 and it would be fine.

You could also just order the NVSRAM board form Jim on the hybridka site for $65 and you would not need a burner, its a true real time mod. You can edit the maps while the car is running with out a blip. http://eccs.hybridka.com/viewt...p9897Do you have a consult adapter? Jim sells the boards for those too but you have build it yourself. I would stay away from the stuff on ebay.

-Avery

[Rev_D21]

I do have the consult adapter, got it from ECUtalk. I was considering Jims set up because it would save so much time and thinking it's a better deal than the burn2 and all the chips I would need. Nothing like real time control! Too bad Jims link is dead at the moment.

[Rev_D21]

UPDATE: Just order the NVSRAM board.

DimeDriver: Seriously thank you for all your help. You have answered many questions I had and I really appreciate your input. Beer on me if we ever meet at a show sometime.
Modified by Reverend D at 9:34 PM 7/29/2009

[dimedriver]

Awesome you will not regret it.

look at this pic for the wires in the stanza harness that do consult.

They are at the center of the connector. I will update with where to connect them to the consult port when I get home.

They are TX, RX and Clock But i don't know which is which untill I get home.

Or you can look at the wiring diagram.and this schematichttp://www.plmsdevelopments.co...4.pdf

If you know anyone that wants to sell an 86.5 to 90 Z24i dizzy and a late 82 or 83 280zx turbo oil pump shaft let me know so I can put this on the L16 in my 510. That would be a hell of a lot better than a beer. ;-)

I will also trade a U12 ECU that is socketed for those parts.-Avery

[Rev_D21]

Well Avery I'll keep my ears to the ground, if anything comes up I'll let you know. What's the difference between the 280zx shaft and one from a KA24e? I have read, though not completely sure, that the L28ET shared the same oil pump as the KA, both were high volume pumps similar to the one Nismo sells in its catalog. Any truth to this?

[dimedriver]

Ok the wires are

ECU Pin 7 Red with yellow/orange stripe is Tx Pin 1 on consult connector.ECU pin 14 Black with white stripe is Clock Pin 9 on consult connector.ECU pin 15 Gray is Rx Pin 2 on consult connector.

These are from a 2.4L Stanza engine/ECU wiring harness.You can see I cut them from the harness in the picture. If you did not get the under dash harness they will terminate in the chassis connector that is near the ECU on the engine harness. Usually white or brown.

This snip from Calum's consult schematic should help too.



-Avery

[Rev_D21]

Gabe hasn't been around in a long time, other people have commented on this. I'm too new to matter to hybrid yet but just something I noticed.

[dimedriver]

I wouldn't worry to much about that. He goes missing every now and again with out notice. There are other guys working on stuff now but your right he was the major contributor.

-Avery

[Rev_D21]

I found a donor for the extra pins I need to wire up the consult plug. It's a 92 Sentra with consult. I am going to hack off the ecu end of the harness to take home with me. I'll take it apart when I get home. The guy quoted me $10 for what I need. I would have taken it today but I was in the company truck and didn't have my tools with me. Jim is sending me my NVSRAM this Tuesday. Looking good so far.

[dimedriver]

You have the Stanza ECU right. The wire and pins just came from the sentra right?

Whats your user name on hybridka.com?

-Avery

[Rev_D21]

Yep, I have the ECU, it's out of a 91 Stanza Manual Trans. Correct, the wires and pins will be coming from the Sentra. Those are the only things I am grabing from the Sentra. I'm Green_KA on hybridka. I only have 2 posts since I am more of a lurking reader than a contributing member, I'm too new to this to start shooting my mouth off as some kind of seasoned tuner.

[Rev_D21]

Ran a quick system test o my brothers 97 Altima to see Calumsult in action. Pretty neat having all those gauges showing what is going on behind the scenes. Slowly but surely the HB will be able to do this too!

[dimedriver]

Sweet, Your setup should go pretty easy.

I started out by using this book.http://www.amazon.com/Modify-M...img_b

Its more about Map based systems but not that bad. Some chapters are total garbage but the book was worth the used price.

Also read this its about the Z31 and Z32 ECU's but its very relevant.http://eccs.hybridka.com/viewtopic.php?f=19&t=47You can skip the part about chipping because you probably already know how that works.

Take lots of pics and do a right up when your done.-Avery

[Rev_D21]

Here's the setup as it stands right now. I have the NVSRAM shipping out tomorrow which will replace the EPROM chip. Still waiting on the Consult pins which I will score this Friday if all goes according to plan. Just in the gathering parts stage, haven't even begun to play with the software on any kind of serious level. I am sure I will have tons of questions when that time comes. My brother hooked me up with his old laptop which has a built in serial port. Getting closer everyday.

Here's the setup:

[Rev_D21]

JMhalder comes through with my NVSRAM board today. The puzzle is coming together, slowly.

[dimedriver]

How is this coming along?

I started building my intake manifold for the 510.



I may have a line on the Dizzy I need.

-Dime

[Rev_D21]

Got lots of parts, lots of software. I haven't put anything together yet. My GFs dad is coming up from Tulsa, he's said he's willing to solder it together for me. I'll send the parts back with him.

How's your project coming along?

[s13_240_rb20]

I did a whole topic on wiring up a consult port on a RB20det. The colors might be different and stuff, but it might be useful info for you. I am pretty sure you can atleast refer to it to see what wires you need to find.....I spell it out really simply according to signal names.

On mine, I needed about 4 wires, a ground, and I can't remember if you need the sixth wire. This datascan cable connected through a USB if that makes a difference.

zerothread/314850

--TJ

[Rev_D21]

Renewed interest in the project. I am sending the ecm over to my GFs father who is going to solder everything up for me. He's an electrical engineer so I imagine the results will be pretty clean. That's where I am at right now.

[s13_240_rb20]

Renewed interest in the project. I am sending the ecm over to my GFs father who is going to solder everything up for me. He's an electrical engineer so I imagine the results will be pretty clean. That's where I am at right now.

Have you tested it to see if the datascan software is going to connect??

It took some trial and error before I figured out exactly how to wire up my consult port on my RB20DET so you may want to check it before you even bother having it soldered....

--TJ

[Rev_D21]

I don't think there will be a problem, this exact setup has been built before(exact part numbers). The tricky part is programming the chip for a D21. I may need more parts off the U12 to get everything working, sensors ect.

[seang]

With the U12 ECU, are you gonna use the DeviousKA stage3 tune? What are your plans for the MAF?

[Rev_D21]

Devious has a stock truck KA tune that I am going to start with, just getting it running will be my first goal. I am thinking I am going to have to go with a modified U12 MAF. This project is coming along slower than grass growing.