The 98/99 ECU Thread
08-18-2004, 01:08 PM
#161
Originally Posted by endus
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.
It is rediculous when someone states opinion as fact. He is not sure yet he writes it that way. The guy is trying to correct another person with his own MISINFORMATION!!! How am i overreating? If you dont see a problem w/ that then youre part of the problem too.
And I know the CEL light issue re: o2 sensors is "common" knowledge. I looked into it too before I researched and located the right ecu. I read the same threads you did in the past
Basically 98 guys do this: Compare your car w/ the 97 max. Find out of the part #s for the emissions equipment are the same. IACV, EGR, o2 sensors etc. If the ECU from a 97 Maxima pinout is the same and it can be plugged into your car then find one (maybe do this at a meet) . Swap out ecus (preferably same trim, tranny, and emission (GXE auto fed) and no CEL triggers then you have the same chance at running a 96 ecu w/o a CEL like 97 owners. I'm not even going to comment on 99s due to the Cali emissions for the 99 model year is totally different but I am running a 99 Infiniti I30 fed spec motor in my car and every sensor on the 99 motor plugs into into my car's harness w/ the exception of the egr equipment because it is physically different ---I reused my 97 EGR and purge valve--- and the 96 ECU isn't throwing any codes .
I'm at work so I dont have all the junk saved on my work computer so let me preface what I'm going to type may be wrong. Any any rate, there are issues w/ the o2 sensor code being triggered because the maxima rear oxygen sensor went from a 3 wire to a 4 wire type sometime in 96. When I was looking for my ECU I only matched up the transmission and emissions spec (Cali). Only after I receive my ecu did I realize that there were issues different o2 sensors.
You can check and see that I never posted anything about this because I am still trying to confirm exactly which mo/yr the o2 sensor was changed thus changing the ecu spec for the 96 model year. I know the date of production of my ecu and if it falls after the month for which the o2 sensors changed then it will better serve everyone to help them narrow down a time period to focus on than the russian roulette system we have now which is buy any ecu you can and good luck. And you know this way SUCKS.
Modding, especially when using parts not made for your car is risk taking but why ruin it for others when you tell them stuff youre not sure of. Sometimes people will take the risk but if you sound dead certain on something you have no personal experience or no clue of then who the F- are you helping?
I am wasting too much time on this. Moderators: delete my post(s) if this detracts from the topic at hand.
08-18-2004, 01:51 PM
#162
Let's just take a look for a second at where we are posting this. We're posting this in the 98/99 ECU thread. The fact that this thread exists, and the fact that there was some interest in my UNICHIP possibility when I posted it means that there is obviously an issue with 98/99's and the 96 ECU OR that there is an issue with misinformation from this collective.
Instead of coming into the thread, explaining your experience and asking how we know and if we know for sure that that is the truth, you come in here and blast ONE guy for saying the same thing that basically everyone in this thread has subscribed to and then proceed to speak on things which you do not know about...exactly the same thing that you're citisizing him for.
You're giving us the old "the risks of modding your car" lecture and talking about how you should try stuff yourself when dude SPECIFICALLY said in his post that he WAS going to try EXACTLY what you said.
The fact that a number of us have spoken directly to the ECU manufacturers and THEY THEMSELVES have warned us about the CEL problem means nothing I guess? Does that make sense when you are the one talking about trusting knowledge on here? Some of us HAVE researched and have come up with the same knowledge that we got on here, but now you feel that you ahve to come in here and tell us how it really is. I am NOT saying that you shouldn't ask all the questions you've asked, but you just jumped into this with the assumption that no one was as smart as you and no one knew what they were talking about.
EDIT: This will be my last post on this stupid subject. Sorry for getting off track but I think this is relevant given the fact that I am trying to reiterate that we got the CEL story from more than just "I heard it on the ORG". That's all I'll say on this.
Instead of coming into the thread, explaining your experience and asking how we know and if we know for sure that that is the truth, you come in here and blast ONE guy for saying the same thing that basically everyone in this thread has subscribed to and then proceed to speak on things which you do not know about...exactly the same thing that you're citisizing him for.
You're giving us the old "the risks of modding your car" lecture and talking about how you should try stuff yourself when dude SPECIFICALLY said in his post that he WAS going to try EXACTLY what you said.
The fact that a number of us have spoken directly to the ECU manufacturers and THEY THEMSELVES have warned us about the CEL problem means nothing I guess? Does that make sense when you are the one talking about trusting knowledge on here? Some of us HAVE researched and have come up with the same knowledge that we got on here, but now you feel that you ahve to come in here and tell us how it really is. I am NOT saying that you shouldn't ask all the questions you've asked, but you just jumped into this with the assumption that no one was as smart as you and no one knew what they were talking about.
EDIT: This will be my last post on this stupid subject. Sorry for getting off track but I think this is relevant given the fact that I am trying to reiterate that we got the CEL story from more than just "I heard it on the ORG". That's all I'll say on this.
08-18-2004, 01:54 PM
#163
Originally Posted by endus
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.
i agree this is no need to argue. ill i was saying is the im going to try and run a 96 ecu in my 99 and see if it works. i talk to jim wolf and they said it can be done.so i thought i would try it hoping to get something to work for the 99s not many pople can spend lots of money trying different things out and those we can help everyone out on differen things is great..so if anyones cares about if this will work or not i will post my comments on what happenes. i just received my 96 ecy today and will send it in to jim wolf. if you would like feedback on it ill start a new thread so it dosent linger in this one. if noones really care i wont post anything.
08-18-2004, 02:35 PM
#164
Originally Posted by Eye Dirty
You are one of the reasons why people are so misinformed. You pass off hearsay like concrete facts. Your replies in this thread are great examples. Ok so you wrote "some 97s" .
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 How do you know it will cause a CEL "all the time"? Are you speaking from experience or what you read in the past?
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:
You go from saying "97+" to "97(some 97s)". You dont think this causes more confusion? If you are the know-it-all then what are the differences between the 97s that will accept a 95-96 ecu with no CEL versus 97s that will trigger a CEL? hmmm? And I like how you wrote "you will have a code".
-----------------------------
Here you are again claiming you "know" it will cause the CEL to trigger yet you sound uncertain as to exactly whats triggering it. "something about the rear O2 sensor". So is this based on your personal experience or what you read/heard?
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.
. 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 How do you know it will cause a CEL "all the time"? Are you speaking from experience or what you read in the past?
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:
You go from saying "97+" to "97(some 97s)". You dont think this causes more confusion? If you are the know-it-all then what are the differences between the 97s that will accept a 95-96 ecu with no CEL versus 97s that will trigger a CEL? hmmm? And I like how you wrote "you will have a code"
.-----------------------------
Here you are again claiming you "know" it will cause the CEL to trigger yet you sound uncertain as to exactly whats triggering it. "something about the rear O2 sensor". So is this based on your personal experience or what you read/heard?
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.
Blah, blah, blah, yada, yada, yada.
I say some 97s because thats what was said a long time ago. Seems that people with earlier 97s didn't have any problems running 95-96 ecus. In the 97+ maximas the rear O2 sensor is AFTER the cat. Many said that is why the CEL is thrown, I don't believe that cause the early 97s have the O2 there as well. I'm guessing that mid 97 changed the signal parameters that are sent to the ECU. What do you mean cause the CEL to be on all time? It's not gonna clear itself is it. The way the ECU works is that it won't trigger the CEL unless the malfunction happens two times during driving. Yes I know it will throw the CEL cause I have yet to hear a 98-99 owner that didn't get the CEL and there are very few of them. A few years ago I put a 6/97 ECU in my old 96. I got the CEL after a few minutes of driving, didn't bother checking it. The major reason most people with 98-99 maximas don't buy the JWT is because they know they will get the CEL. I know that JWT takes months to even deliver the ECU but the main reason is the CEL. If I had a 98 I would not get a JWT simply cause of that, no other reason. I wouldn't want to change the ECU even though it is every 2 years. Simple as that. Maybe what I said before didn't sit well with you or I said different things. Maybe I was drunk what do you know?
08-18-2004, 02:47 PM
#165
Just looked in the FSM, there is only 1 CEL code for the 95/96 maxima related to the rear o2 sensor, 0707. On the 99 there are 12(half for cali half for FED spec) codes related to the rear o2. On the 98 there are 5. On the 97 there are only 2, 0707 and 0902. Looking a bit more shows that voltages are also different from the 98 to the 96 for the 0707 code to pop up.
08-18-2004, 04:16 PM
#166
Originally Posted by DAVE Sz
Just looked in the FSM, there is only 1 CEL code for the 95/96 maxima related to the rear o2 sensor, 0707. On the 99 there are 12(half for cali half for FED spec) codes related to the rear o2. On the 98 there are 5. On the 97 there are only 2, 0707 and 0902. Looking a bit more shows that voltages are also different from the 98 to the 96 for the 0707 code to pop up.
08-18-2004, 04:52 PM
#167
I know the O2 sensors on both my 96 maxes, production dates 7/95(earliest 96) and 6/96(latest 96) both have 2 wires. Not sure of the date for the FSM but it's a 95 version. Front O2 sensors have 3 wires. In the diagram for the O2 sensors there are 3 wires. 2 go to the ECU while the 3rd goes to the IGN switch.
08-18-2004, 05:45 PM
#168
Originally Posted by chuckie311
i agree this is no need to argue. ill i was saying is the im going to try and run a 96 ecu in my 99 and see if it works. i talk to jim wolf and they said it can be done.so i thought i would try it hoping to get something to work for the 99s not many pople can spend lots of money trying different things out and those we can help everyone out on differen things is great..so if anyones cares about if this will work or not i will post my comments on what happenes. i just received my 96 ecy today and will send it in to jim wolf. if you would like feedback on it ill start a new thread so it dosent linger in this one. if noones really care i wont post anything.
08-18-2004, 09:22 PM
#169
I don't know how JWT can change it work with the 99. Wouldn't it be the same thing if you just swapped stock ECU for STOCK ECU? Put the 96 in the 99, drive a few days and wait for the CEL. All JWT does is change the fuel and a/f maps if I read correctly. They never mentioned anything about changing other parameters in the ECU. Either way, good luck.
08-18-2004, 11:10 PM
#170
Originally Posted by DAVE Sz
I don't know how JWT can change it work with the 99. Wouldn't it be the same thing if you just swapped stock ECU for STOCK ECU? Put the 96 in the 99, drive a few days and wait for the CEL. All JWT does is change the fuel and a/f maps if I read correctly. They never mentioned anything about changing other parameters in the ECU. Either way, good luck.
they told me that the ecu alone will not work in the car that it has to be reprogrammed by them to work in the 99s.so it is going to be sent in on monday to them and from what i hear it probley wont get it back anytime soon. so when it comes back i will post my feeback on what happens.
08-19-2004, 03:54 AM
#172
Originally Posted by chuckie311
they told me that the ecu alone will not work in the car that it has to be reprogrammed by them to work in the 99s.so it is going to be sent in on monday to them and from what i hear it probley wont get it back anytime soon. so when it comes back i will post my feeback on what happens.
some how i found this hard to belive
08-19-2004, 12:51 PM
#173
Originally Posted by zack342
that's not what they told me. he said a stock 96 ecu should work and the tech also said that the only thing that would not work is the imobalizer. he said if i have a 99 5 speed and i use a 96 speed ecu it should work with out any check engine lights. he said they have done this already for customers.
some how i found this hard to belive
some how i found this hard to belive
well here is my email from them
Thank you for your interest in JWT products. Yes it is possible to use the 96 Maxima ECU in a 99, only after it is upgraded though.
If you have any technical questions please give us a call M-F 8-5 (pst) @ 619-442-0680
Colleen
08-19-2004, 01:10 PM
#174
02-07-2005, 08:57 PM
#177
Supporting Maxima.org Member
Join Date: Oct 2004
Posts: 69
I have been trying to find a certain racing O2 sensor for the problems that might come outta the 96 ecu swap, basically the way the O2 sensor works is you can adjust the voltage coming out of the O2 sensor going into the ECU. Basically you find the voltage range that works for your vehicles ECU and go from there. I work at an Advance Auto Parts and a few customers have requested these for there newer 350s that have a O2 sensor set up on them. I can never find a website for these though. This O2 sensor could take care of the problems in swapping and popping O2 codes. I really hope you guys will stop arguing and let the guys that are actually trying to hack into the ECUs use this post.
02-08-2005, 07:39 AM
#178
Supporting Maxima.org Member
iTrader: (3)
Join Date: Oct 2002
Location: Ontario, Canada
Posts: 1,204
Originally Posted by MadMaxima99
I have been trying to find a certain racing O2 sensor for the problems that might come outta the 96 ecu swap, basically the way the O2 sensor works is you can adjust the voltage coming out of the O2 sensor going into the ECU. Basically you find the voltage range that works for your vehicles ECU and go from there. I work at an Advance Auto Parts and a few customers have requested these for there newer 350s that have a O2 sensor set up on them. I can never find a website for these though. This O2 sensor could take care of the problems in swapping and popping O2 codes. I really hope you guys will stop arguing and let the guys that are actually trying to hack into the ECUs use this post.
http://forums.maxima.org/showthread.php?t=350138
I am still waiting for a "volunteer" to swap a 96 ecu into their 99 and make the necessary changes to the wiring harness. I have a list of the wires that need to be moved. You will have several codes though which will have to be addressed once the car is running.
02-11-2005, 07:38 PM
#180
Supporting Maxima.org Member
iTrader: (3)
Join Date: Oct 2002
Location: Ontario, Canada
Posts: 1,204
Originally Posted by MadMaxima99
find a 99 and 96 wrecked max (possibly the same time you find a ecu and cut the harness connector on both and wire it in your self, plug and play. Hard part is getting a junk yard to let you cut the harness.
Cutting through a bundle of 90 wires and trying to match them up again between two different years would be a horrendous and unnecessary task. You can't even match up the colours as some of them are different between 96 and 99.
I have a cut harness that I got from the wreckers for free when I bought one of my 96 ecus. I needed some extra ecu harness terminals to wire in some extra sensors that the 96 ecu required but the 98 maxima did not come with.
02-28-2005, 08:12 PM
#185
SR, if you figure it out, will you actually tell us how you did it or will you just brag about how you did it but aren't telling?
It would be awesome if you could figure out a way to hack the '99 ECU (rather than put in an earlier MY ECU) because I don't want to give up my immobilizer until I have a good aftermarket security system, which will be a long time because I have many other priorities.
It would be awesome if you could figure out a way to hack the '99 ECU (rather than put in an earlier MY ECU) because I don't want to give up my immobilizer until I have a good aftermarket security system, which will be a long time because I have many other priorities.
03-01-2005, 04:21 AM
#188
Originally Posted by VQuick
SR, if you figure it out, will you actually tell us how you did it or will you just brag about how you did it but aren't telling?
It would be awesome if you could figure out a way to hack the '99 ECU (rather than put in an earlier MY ECU) because I don't want to give up my immobilizer until I have a good aftermarket security system, which will be a long time because I have many other priorities.
It would be awesome if you could figure out a way to hack the '99 ECU (rather than put in an earlier MY ECU) because I don't want to give up my immobilizer until I have a good aftermarket security system, which will be a long time because I have many other priorities.
You people make it sound as if I hide alot of things from you. If you'd search to find all the things I have contributed to the .org you'll notice there are only one or two things that I have kept for myself. And I certainly havent bragged about either of them.
03-01-2005, 02:53 PM
#190
Originally Posted by VQuick
Somebody answer SR's question so he can get cracking!
03-01-2005, 04:23 PM
#192
eng92 was giving chuckie tips on using a 96 5speed ECU in his 99. a couple months ago. Eng92 modded his stock 98 wiring harness to accept a 96 ecu and from what he explained to me all he had to do was move a couple pins around on the harness
03-01-2005, 04:39 PM
#193
chukie has all the pinouts in a excel document as do i. i was going to try doing it but the 99 is differnt then switching pins around because of the immobilizer. i dont think anyone has had the ***** to cut and splice or (Switch pins) around on exacly 27 pins if anyone else wants the pinout chart with colors of wires pm me SR do u need this? ... somone get the guts to cut some wires and get this done!!! if it works hell i think every big mod 99 will do it up and every ecu maker should be getting alot more business
04-08-2005, 09:11 AM
#194
Originally Posted by SR20DEN
OK fells I want to jump in on the '99 ECU problem. Has anyone actually installed an earlier ECU in their '99 successfully?
JWT said that for the 99 models the best suited ecu would be from the 96.
To make a long story short I spoke to ben yesterday 04/07/05 and he
informed me that the ecu was completed and tested and everthing was 100%.They shipped it yesterday as well so i should receive it within the next few days, upon installation i would give you the final verdict.
04-08-2005, 09:33 AM
#195
Ok so now they do have a 99/98 ecu, im assuming it has a upgraded rev limiter and everything else upgraded for performance jouvert00? Is it plug and play, or do you have to rewire the harnesses?
04-08-2005, 09:59 AM
#196
It is actually a plug and play deal, I have all the benifits of the 95-96 ecu upgrades
7k rev limiter/speed limit removal/ignition map timing adjustment/fuel map adjustment
There is no harness swap or rewiring needed.
7k rev limiter/speed limit removal/ignition map timing adjustment/fuel map adjustment
There is no harness swap or rewiring needed.
04-08-2005, 12:26 PM
#197
Originally Posted by jouvert00
It is actually a plug and play deal, I have all the benifits of the 95-96 ecu upgrades
7k rev limiter/speed limit removal/ignition map timing adjustment/fuel map adjustment
There is no harness swap or rewiring needed.
7k rev limiter/speed limit removal/ignition map timing adjustment/fuel map adjustment
There is no harness swap or rewiring needed.
I forgot to mention the only thing that needs to be done on the 96 upgrded jwt ecu is you would need to relocate the fuel ignition wire by simply moving it from pin 117 to pin 11.
04-08-2005, 04:33 PM
#199
Yeah, well, definitely let us know once you have this done. So you you are saying is that all we need to do is supply jwt a 1996 core and we're fine putting that ECU in our cars (modifying pin 117)?
What about Californa-spec vehicles? Or the 1999 immobilizer?
Do we get a CEL with the 96 ECU?
What about Californa-spec vehicles? Or the 1999 immobilizer?
Do we get a CEL with the 96 ECU?
04-08-2005, 06:49 PM
#200
Originally Posted by jouvert00
It is actually a plug and play deal, I have all the benifits of the 95-96 ecu upgrades
7k rev limiter/speed limit removal/ignition map timing adjustment/fuel map adjustment
There is no harness swap or rewiring needed.
7k rev limiter/speed limit removal/ignition map timing adjustment/fuel map adjustment
There is no harness swap or rewiring needed.