The 98/99 ECU Thread
07-09-2004, 07:51 PM
#121
Originally Posted by 98fiveSpeed
dude all we need is to spy on the communication between the ecu and the consult system. once we have that then we can sit and analyze the log to see what happened and try to reverse it..
I can do the spying, but how can I make a dealer use the consult scanner for something on my car? You think I can just go and say "Hey, can u scan my car?" :-/
I can do the spying, but how can I make a dealer use the consult scanner for something on my car? You think I can just go and say "Hey, can u scan my car?" :-/
07-09-2004, 07:55 PM
#122
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Join Date: Jun 2002
Posts: 372
Thats what I meant by "I can do the spying". I didnt mean as a real spy, I was talkign digital. I can record the traffic between the ECU and consult. Not a problem, but what if they use the OBD-II port to do the scanning?
07-09-2004, 08:05 PM
#123
Originally Posted by 98fiveSpeed
Thats what I meant by "I can do the spying". I didnt mean as a real spy, I was talkign digital. I can record the traffic between the ECU and consult. Not a problem, but what if they use the OBD-II port to do the scanning?
I would assume they would use their precious Consult-2 system to some how justify the $50+ dollars they're gonna charge you for the scan and ECU clearing. So you can try that and if anyone says your not dedicated after all that, feel free to kick them in the nuts.
07-09-2004, 08:07 PM
#124
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Join Date: Jun 2002
Posts: 372
Reading this from http://www.nissan-techinfo.com/nissa...0.asp?mscssid=
[quote]
There are now three software cards used with the CONSULT-II tester. Updates for all three cards are available through ASIST. The Diagnostic (red & white) and NATS (purple) software cards were previously provided with the CONSULT-II Kit. The ECU Reprogramming software card is orange in color. The blue Diagnostic Card was superceded by the red and white Diagnostic Card as of April 1, 2001. If you have trouble with the operation of any card, you can restore the basic software with ASIST. Refer to the software card specific service procedure provided in this bulletin for detail.[QUOTE]
Just thought that I'd post the above. So its pretty obvious that these babies are reprogrammable.
[quote]
There are now three software cards used with the CONSULT-II tester. Updates for all three cards are available through ASIST. The Diagnostic (red & white) and NATS (purple) software cards were previously provided with the CONSULT-II Kit. The ECU Reprogramming software card is orange in color. The blue Diagnostic Card was superceded by the red and white Diagnostic Card as of April 1, 2001. If you have trouble with the operation of any card, you can restore the basic software with ASIST. Refer to the software card specific service procedure provided in this bulletin for detail.[QUOTE]
Just thought that I'd post the above. So its pretty obvious that these babies are reprogrammable.
07-10-2004, 04:26 AM
#125
http://www.oemtools.com/pages/7
Just buy a Consult II
Man it is hard to find any good info on Consult II and on Asist.
Just buy a Consult II
Man it is hard to find any good info on Consult II and on Asist.
07-10-2004, 07:21 AM
#126
My dad owns a bodyshop and they also have a mechanics shop in tehre, they fix a LOT of maximas around the philadelphia area because a lot of russian people drive them, let me see what kind of scans they have, plus my dad knows a LOT of people in the business, maybe i cab BORROW one if someone does actually have them, btw theres a nissan dealership right across from my dads place that is very friendlt with my dad and our workers, lemme see what i can find out.
07-10-2004, 01:36 PM
#129
http://www.techtom.co.jp/NFhdm/HDM2000.htm
http://babelfish.altavista.com/
Translate Jap to Eng.
Interesting, its like a universal Consult, you just buy hte card for your brand.
http://babelfish.altavista.com/
Translate Jap to Eng.
Interesting, its like a universal Consult, you just buy hte card for your brand.
07-11-2004, 02:24 PM
#131
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Join Date: Jun 2002
Posts: 372
Originally Posted by 99automax
anyone think about the format of the 3bytes cause from what it sounds like is <metafore> we are using fat32 gui to try to talk to a NTFS interface so to speak
We have 3 Bytes... 8 bits each.. so we go from 0x00 to 0xFF
0x00 0x00 0x00
0x00 0x00 0x01
..
0xFF 0xFF 0xFF
and if its only 3 bytes that the ecu is waiting for, then they must be in the above set. Unfortunatly we're going live on a project at work and I've been working thru the weekend so havnt had the chance to let the program run.
And FAT32 and NTFS are both filesystems. I dont know why you are trying to bring a filesystem into the equation.
07-11-2004, 04:25 PM
#132
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Posts: 372
I ran across another thread while searching for info on Consult-II.
Apparently some buys with Nissan Skylines have been trying to do the same thing that we are. It seems like R32/33 guys have been successful but the R34 guys have the same problems as us. I encourage you all to read this thread, very good information.
How to communicate with a R33 Skyline ECU
Apparently some buys with Nissan Skylines have been trying to do the same thing that we are. It seems like R32/33 guys have been successful but the R34 guys have the same problems as us. I encourage you all to read this thread, very good information.
How to communicate with a R33 Skyline ECU
07-11-2004, 05:59 PM
#133
Your guys best bet this is what i would do, get a 96 engine complete with wiring harness and ECU soooo cheap probably $200 at most for both and you can figure the rest out just swap ecu and harness.
07-25-2004, 05:38 AM
#134
Junior Member
Join Date: Jul 2003
Posts: 29
any update on this project? 
i would be willing to help out because i might have to go in for serviceing soon, i got a cel light for my evap system.
But i wouldnt know how to do the logging that was talked about earlier, someone would have to give me a run thru.
i would be willing to help out because i might have to go in for serviceing soon, i got a cel light for my evap system.
But i wouldnt know how to do the logging that was talked about earlier, someone would have to give me a run thru.
07-27-2004, 03:56 PM
#135
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Join Date: Jun 2002
Posts: 372
I havnt had any luck so far.
As far as logging the consult-II, we would have to build the data logger. Can be done, but I want to see if we have any other options.
Havnt had the chance to try out my program. Been busy with work too much.
Another thing I am waiting to try out is to get a hold of a 96 car and see if that ECU wants to cooperate...
Things are finally dying down at work.. So I will try out a few tricks that I've got in my head and will report back..
Anyone else built a consult reader? If so please try it with a 96 or older max and tell me if u get anything back from the ECU.
From what I've researched, the ECU will respond back with the exact opposite of what you send it. It will respond with something other than the opposite of what u send if and only if the correct initialization bytes were sent. So at this point, even if the ECU send back the opposite of something you sent it, then we might get somewhere, but if we cant even get the ECU to respond to anything.. then we're stuck.
As far as logging the consult-II, we would have to build the data logger. Can be done, but I want to see if we have any other options.
Havnt had the chance to try out my program. Been busy with work too much.
Another thing I am waiting to try out is to get a hold of a 96 car and see if that ECU wants to cooperate...
Things are finally dying down at work.. So I will try out a few tricks that I've got in my head and will report back..
Anyone else built a consult reader? If so please try it with a 96 or older max and tell me if u get anything back from the ECU.
From what I've researched, the ECU will respond back with the exact opposite of what you send it. It will respond with something other than the opposite of what u send if and only if the correct initialization bytes were sent. So at this point, even if the ECU send back the opposite of something you sent it, then we might get somewhere, but if we cant even get the ECU to respond to anything.. then we're stuck.
07-28-2004, 03:32 PM
#137
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Join Date: Jul 2003
Posts: 409
http://forums.maxima.org/showthread....8&page=1&pp=30
from the turbo/sc forum. scroll down a bit, some links to utilties that may be of some help. I have not been following this thread closely so apologies if this is a repeat of information already shared.
from the turbo/sc forum. scroll down a bit, some links to utilties that may be of some help. I have not been following this thread closely so apologies if this is a repeat of information already shared.
08-02-2004, 03:29 PM
#138
Quote copied.....
I can do the spying, but how can I make a dealer use the consult scanner for something on my car? You think I can just go and say "Hey, can u scan my car?" :-/
Just go and buy a new key for your 99 and they have to plug the consult into the car to program the new key.
I can do the spying, but how can I make a dealer use the consult scanner for something on my car? You think I can just go and say "Hey, can u scan my car?" :-/
Just go and buy a new key for your 99 and they have to plug the consult into the car to program the new key.
08-03-2004, 08:03 AM
#139
GOOD NEWS.
Got a reply from UNICHIP today. They claim they can do the work. I did not explain the reason for wanting to extend the rev limiter, so that's the confusion. I emailed him back with an explanation...
Got a reply from UNICHIP today. They claim they can do the work. I did not explain the reason for wanting to extend the rev limiter, so that's the confusion. I emailed him back with an explanation...
Dave,
My apologies for the very late reply. Yes, there is a Unichip which will control
timing and fuel on the Maxima. It can also raise the rev limiter, but that requires
making a modification to the stock ECU which is fairly expensive and which really doesn't
add any power... it may add horsepower but what really accelerates the car is torque and
on virtually all normally aspirated engines, torque falls off fairly rapidly after about
75% OEM redline.
Currently, the Unichip is only available in a custom install/custom tune form for
your car. There is a good tuner in CT who can do the work if desired. My guess (since
he's an independent contractor and sets his own prices) is that the total including all
parts, labor, and a custom dyno tune would be about $850.
Please let me know if I can answer any additonal questions and again my apologies
for the tardy response.
Jack
My apologies for the very late reply. Yes, there is a Unichip which will control
timing and fuel on the Maxima. It can also raise the rev limiter, but that requires
making a modification to the stock ECU which is fairly expensive and which really doesn't
add any power... it may add horsepower but what really accelerates the car is torque and
on virtually all normally aspirated engines, torque falls off fairly rapidly after about
75% OEM redline.
Currently, the Unichip is only available in a custom install/custom tune form for
your car. There is a good tuner in CT who can do the work if desired. My guess (since
he's an independent contractor and sets his own prices) is that the total including all
parts, labor, and a custom dyno tune would be about $850.
Please let me know if I can answer any additonal questions and again my apologies
for the tardy response.
Jack
08-03-2004, 09:56 AM
#141
Originally Posted by kevlo911
Greddy Emanage does almost everything Unichip can and you can tune it yourself and it is cheaper.
Mmmkay...then what are we bothering with this thread for again? I'll have to look into that...
08-03-2004, 10:04 AM
#142
don't know if this helps
I don't know if this will help you at all or if it is repost but I found this company that makes a consult interface
Company
Here is a schematic of how to build your own consult interface
schematic
If you look at the bottom of the company page they have the nissan datascan software for sale.
Like I said hope this helps.
Company
Here is a schematic of how to build your own consult interface
schematic
If you look at the bottom of the company page they have the nissan datascan software for sale.
Like I said hope this helps.
08-03-2004, 10:17 AM
#143
kevlo is right that it seems that emanage might do most of the same things. If Jack from UNICHIP is right and they are able to extend the rev limiter, though, that might still be a step forward.
I just got another email from the dude. He said that if there is sufficient interest, they might be able to do a prefab kit that would basically be plug and play. I have a feeling that not everyone here is going to want to tune it themselves...pretty sure I don't...so a prefab kit might be nice.
From the sound of it, I tend to doubt that the raised rev limiter would be incorporated into the possible prefab kit, but I'd have to check. What I am thinking for myself, though, is that I was never 100% on the MEVI. After seeing that other thread, I am thinking maybe extrude honing the stock manifold OR getting the SSR manifold if they end up doing it and it's what I want. I think that would be ideal for me. That plus the UNICHIP would be pretty much exactly what I want for this car.
Are people interested in the UNICHIP idea? I can try to coordinate if there is interest...
I just got another email from the dude. He said that if there is sufficient interest, they might be able to do a prefab kit that would basically be plug and play. I have a feeling that not everyone here is going to want to tune it themselves...pretty sure I don't...so a prefab kit might be nice.
From the sound of it, I tend to doubt that the raised rev limiter would be incorporated into the possible prefab kit, but I'd have to check. What I am thinking for myself, though, is that I was never 100% on the MEVI. After seeing that other thread, I am thinking maybe extrude honing the stock manifold OR getting the SSR manifold if they end up doing it and it's what I want. I think that would be ideal for me. That plus the UNICHIP would be pretty much exactly what I want for this car.
Are people interested in the UNICHIP idea? I can try to coordinate if there is interest...
08-05-2004, 02:43 PM
#145
Update Spoke To Jim Wolf And You Can Use A 96 Ecu To Replace The 99 Ecu.so If You Wanted To Get All The Power Out Of The 96 Send It To Them And They Will Program It And It Will Work For The 99 Maximas
08-05-2004, 04:15 PM
#146
What? A 96 ECU will cause a CEL to be on all the time. How is that OK to use? Come emissions time and you need to put the stock one back in. If what he told you is true why is there no one running a 95-96 ECU in a 97+ maxima with no CEL?
08-05-2004, 05:19 PM
#147
you dont know if it causes a cel light. at least you will have the ecu that will work for extened redline and so fourth..i dont know why no one has tried it but im going to try it and ill let you knowwhat happens all i want to use it for is the redline raised for the mevi
08-06-2004, 03:11 PM
#149
Originally Posted by chuckie311
you dont know if it causes a cel light. at least you will have the ecu that will work for extened redline and so fourth..i dont know why no one has tried it but im going to try it and ill let you knowwhat happens all i want to use it for is the redline raised for the mevi
08-17-2004, 05:42 PM
#153
well if someone has tired it why has no on posted anything about it then? and if it does work why dont more people do it then.
Originally Posted by DAVE Sz
I do KNOW it causes the CEL to go on, something about the rear O2 sensor. What do you mean no one tried it? In a 99 or anything 97+? If you get a CEL on 97 and 98 maximas how do you expect there not to be a CEL on a car that is even more different from the 96? Many have tried and yes it will work but then you still need your a stock ECU for emissions.
08-18-2004, 08:58 AM
#154
No one posted what? People don't do it cause they are scared to have the CEL on. If you have a 97(some 97s)-99 maxima and you use a 96 ECU you will have a code. People don't try it cause they would need to find an extra ECU, last I checked 5spd ECUs weren't that easy to find. I'm just repeating myself as you don't seem to be getting this through you head.
08-18-2004, 09:04 AM
#155
Originally Posted by DAVE Sz
No one posted what? People don't do it cause they are scared to have the CEL on. If you have a 97(some 97s)-99 maxima and you use a 96 ECU you will have a code. People don't try it cause they would need to find an extra ECU, last I checked 5spd ECUs weren't that easy to find. I'm just repeating myself as you don't seem to be getting this through you head.
08-18-2004, 09:34 AM
#156
Originally Posted by DAVE Sz
No one posted what? People don't do it cause they are scared to have the CEL on. If you have a 97(some 97s)-99 maxima and you use a 96 ECU you will have a code. People don't try it cause they would need to find an extra ECU, last I checked 5spd ECUs weren't that easy to find. I'm just repeating myself as you don't seem to be getting this through you head.
big deal a cel light wow.. i had no problem finding a 96 ecu guess you dont know where to look for them..and show me a post where they are using a 96 ecu in a 99 cause i have seen noone who has done it.quit repeating yourself then.if you are scared to have a cel engine light then dont do it.all i was saying the is an option to run a modifed 96 ecu in the car if you dont want to to it good maybe other people will.
08-18-2004, 09:49 AM
#157
Originally Posted by DAVE Sz
What? A 96 ECU will cause a CEL to be on all the time. How is that OK to use? Come emissions time and you need to put the stock one back in. If what he told you is true why is there no one running a 95-96 ECU in a 97+ maxima with no CEL?
I am running a 96 5sp JWT ECU on my 97 with no CEL. When I received the ECU from a salvage yard I drove it around for one week before sending it to JWT. No CEL. 0505 code ( No Failure Recorded/Detected ). After JWT programmed the ECU I installed it and no CEL, and 0505 code.
08-18-2004, 09:58 AM
#158
Look 3 or 4 posts up, I said some 97s. Pretty soon we'll be installing a 96 ECU in a friend's 98 just to see what happens. And it's car-part.com. All I was saying that many people don't like the idea of having to switch ECUs when emission time comes around. I know it's every 1 or 2 years but from the posts I read of people saying how damn irritating taking the ECU is, some may have stayed away for that reason. That's all.
08-18-2004, 10:52 AM
#159
Originally Posted by DAVE Sz
Look 3 or 4 posts up, I said some 97s. Pretty soon we'll be installing a 96 ECU in a friend's 98 just to see what happens. And it's car-part.com. All I was saying that many people don't like the idea of having to switch ECUs when emission time comes around. I know it's every 1 or 2 years but from the posts I read of people saying how damn irritating taking the ECU is, some may have stayed away for that reason. That's all.
. Lets take a look the 3 or 4 posts with all the "facts"
In my first reply I replied because the stuff you wrote is suggesting that you have definitive, irrefutable facts. In your response to chuckie311 you wrote
Originally Posted by DAVE Sz
What? A 96 ECU will cause a CEL to be on all the time. How is that OK to use? Come emissions time and you need to put the stock one back in. If what he told you is true why is there no one running a 95-96 ECU in a 97+ maxima with no CEL?
Basically youre saying you know more about Maxima ECUs than Jim Wolf Technologies
You also ask in the same quote "why is there no one is running a 95-96 ECU in a 97+Maxima with no CEL" Of course I replied to counter your claim. In case you missed reading up other people's experiences and passing it off as your own there are others in this forum that are running 95-96 ecus in 97+ Maximas w/ NO CEL.
Funny how you post something then just contradicted yourself w/ the 97+ maximas w/ no cel by your own reply quoted below:
Originally Posted by DAVE Sz
If you have a 97(some 97s)-99 maxima and you use a 96 ECU you will have a code. {snip}
.-----------------------------
Originally Posted by DAVE Sz
I do KNOW it causes the CEL to go on, something about the rear O2 sensor.{snip}
You wonder why people dont try to install the ECUs on their cars? From people in the past that give their useless $.02 based on hearsay and not from personal experience.
08-18-2004, 11:58 AM
#160
This is stupid. Dude is goin to try it on a 98...wait for the results. I thought that the CEL was due to an oxygen sensor or something that was actually not on the 98+ Maxima, but I may just be making that up.
To blame Dave for believing what has come to be pretty common knowledge around here is ridiculous. I agree that maybe we take people's word for it too often here, and so called "impossible" things have been getting done lately, but you're still overreacting to dude.
As far as having a CEL, that's weak for a lot of reasons. Not wanting to drive around with a CEL (and have problems at emissions time and lose the functionality of the CEL and not want to be kludgy) is entirely understandable.
The rumors of possible lean running on the high end with the JWT's doesn't thrill me either.
Seriously...I really don't see the need for the argument that's happening here...and lord knows I love to argue.
To blame Dave for believing what has come to be pretty common knowledge around here is ridiculous. I agree that maybe we take people's word for it too often here, and so called "impossible" things have been getting done lately, but you're still overreacting to dude.
As far as having a CEL, that's weak for a lot of reasons. Not wanting to drive around with a CEL (and have problems at emissions time and lose the functionality of the CEL and not want to be kludgy) is entirely understandable.
The rumors of possible lean running on the high end with the JWT's doesn't thrill me either.
Seriously...I really don't see the need for the argument that's happening here...and lord knows I love to argue.