i agree if you are going to bark about 500 dollars for it dont buy it.funny that some will spend 500 for the mevi but b*tch about 500 for the ecu..

 

hey drew where did u get the rims?

 

Becaus eone thing they can see and the other is under the dash

 

lame bastards

 

Hear anything yet, Drewm?

 

so pull it out and lay it on the floor if you want to see it. who cares if you can see it or not. or not looking at your mods when you are driving are you

 

lets not lose sight of the goal, if your mr cheapo don't post we do not care. on the bright side the rest of us who do want it lets hope it happens.

 

sorry guys it failed they couldn't do it. our ECU's are closer to 97-98...We are out of options

 

THE BIG UPDATE!

So first off, I'd like to say, that everyone down there is really nice. Good people to work with.

Second, for everyone who wants to know what happened...

So the 1999.5 ECU is almost exactly like the 97/98 ECU, almost no relation to the 2000/2001 or 2002/2003 ECU. Which means there will not be a 99/99.5 ECU that can come out in the "near" future.

For those who are wondering the technical details of their ECU mods:

The 95/96 ECU worked using a piggyback controller mounted in the ECU casing. From there, the A/F and ignition timing could be adjusted. Because of Nissan's change to the ECU majorly after 96, the piggyback controller didn't work on the 97-99 ECUs. In 2000 Nissan switched to an ECU with a flashable EEPROM (works like flash memory, erase and write again, instead of everything hard coded) and this mod has just been accomplished on the 2000/2001 ECUs and is in development. The 2002/2003 ECU is very similar to the 350z ECU and was developed alongside it, and is currently in their product lineup.

They also told me that building another piggyback unit for the 97-99 would be very expensive and that's why they haven't really looked into it much. They would only look into it more if they had "a lot of free time." So I personally think that the best solution for the 99s in the near term is to attempt to make a 95/96 ECU work, since this has been accomplished in the 97/98, and due to the similarities in the 99, this may be feasable.

 

thanks alot Drew i personally appreciate you taking your time to go down there and let them use your car for observation and testing. i wish it were diffrent but i guess it was not ment to be.

 

yeah that sucks. i have been trying to get a 96 ecu to work in my car.but im waiting for ben from jwt to get me the specs on what pins to move.but im not holding my breath for that one.. guess when i have some free time ill work on it some more.
thanks for the info DREW.. i spoke withTECHNO a few months ago asking if i could bring in my car for a look at the ecu or whatever they needed since i worked right down the street from them.oh well

 

I will not give up hope. I won't have money for ECU for a long time anyway. Thanks Zack & Drew!

 

damn, im going to try to make a chip for my 97. =) hopefully it'll work.

 

just to through this out there will a 2000 ecu work in the car anyone tired it???

what about the stillen VQpro?? havent heard about that in quite awhile either

 

the stillen VQ pro from what i know last time i talked to Adam over there is not an option. There is something called SMT6 that we can use but i don;t know much about this. Chuckie if you need pin outs i have purchased a 99 fsm and can scan whatever pages you may need let me know. i am going to keep looking for other options, i am just so disappointed that this was sucessful.i know some guys with 2000's maybe somone would let me try starting my car with their ECU

 

Quick side note when they removed your ECU drew did it affect your immobalizer in any way

 

Holy Crap do you know what this means, this is the best news Ive heard since I came to china. YAYYYYYYYYYYYYYYYYYYYYYYYYYY

 

Will any 99 owner dissconnect the immobilizer and see if it still turns on?

 

A resource full 99 owner could get a 96 ECU to work. I bet it is just a matter of changing a few pins.

 

Nope, car works fine. I actually got to take a look at the two ECUs directly, and they did have exactly the same parts, with my 99 missing one chip on the board, but everything else being exactly the same. I'm guessing the immobalizer isn't a function of the ECU.

 

ive been looking and whats involved for the 96 ecu swap?

 

i know its 2 pins that you have to swap the fuel pump pin and 1 other one. ben from JWT was going to send me the pin out of what pins i needed to swap but have never heard back from him..

 

Is the crack in China that good. They just said that the ECU won't be happening and you say it's the best news you've heard? Maybe you should stay in China for 2, 20 years.

 

You'll never hear back from anyone at JWT, especially Ben. You better look elsewhere bro.

 

does anyone have a 96 ECU they can try in a 1999.

 

yeah i have a 96 ecu and the car wont start. i have tried changing a few pins but have no luck just yet... i just need to find the time to figure it out.or try and get my hands on a 2000 ecu and try it with that also

 

yeah i know that..i have emailed him several times and no answer. and when i call and talk to him that same excuse i have to fint the paper work for it

 

If all else fails, just go with a stand alone.

 

Too expensive and too much time involved for just a higher rev limit

 

what's it like having MEVI and normal limiter? is it as bad as they say it is?

 

good and bad good cause on the highways the car pulls like hell wheni need to pass.sucks because you can start to feel the car pull harder right at the redline.ill get it figured out soon as i get some free time to mess with my 96 ecu. it cant be that hard to get it to run if someone else has done it before from what i have heard.

 

So is doing the 95-96 ecu conversion a 50 50 chance of working type of thing? I have a 99 about to get my mevi and I need to get the raised limiter and was told to get ahold of the 95-96 ecu's.. Or is it pretty fool proof and just configuration stuff?

 

from what ben at JWT told me all you need to do is move 2 pins on the harness and it will work. but eveytime i talk to him he needs to find the paper work to know what two pins to move. so if you can get a hold of him and bug him like i do you might be able to get the info from him..

 

No problem i will start harassing BEN at JWT. i also have an FSM in the Mail. anyone have the 95-96 FSm that i can have some scans of to start compaing pin outs?

 

geez, if they had the ecu chip working, they would have made a lot of money from us ^^

 

That's what they always say and in the end all you morons back out and that's why companies lose interest in maximas.

 

thanks for your kind words of inspiration once again dave.

Chuckie is this what you were looking for? It has the pinout list for the 96 Maxima ECU?. if you have a FSM and actual ECU i am sure you can give it a shot here is the link to the pin out
http://jimwolftechnology.com/wolfpdf...ORENGSWAPS.PDF

 

WHAT got into your panties this time? What I said is true. XOPTON said they'd make tons of money when in reality the hundreds of people saying they want the chips would turn into 20 actually paying. Don't you know by now that 90% of maxima a owners are cheapos?

 

this information is from a post by eng92
this the thread http://forums.maxima.org/showthread.php?t=350138

This may be common knowlege but I did not see it in the stickies.

There are two basic steps involved:
1) On the ECU connector, move the wire from pin 107 to pin 105.
2) Change out your 4-wire zirconia type rear O2 sensor for a 3-wire titania type.

From previous posts I have read, it seems that most people are aware of step 1 but do not carry out step 2.

Please be aware that you cannot sub a 3-wire zirconia type sensor in place of the 3-wire titania. The two types work completely differently.
The zirconia type generates a voltage depending upon O2 levels. The ECU expects to see a fluctuating voltage from 0-1.0 V.
The titania type sensor changes in resistance depending on O2 levels. The ECU measures the voltage drop across this resistance. It expects a voltage fluctuating between 0-2.2V.
If the ECU does not see the specified voltage fluctuation after a given time period, it will throw the P0136 code and give you a CEL.

Some of you may have discovered that the rear O2 sensor bung on a 98 is an 18mm thread while the one on a 96 is 12mm.

There are three options for sensor replacement:

1) Buy a 12mm, 3-wire titania type for a 96 and machine an adapter for it to fit the 18mm threaded bung.

2) Weld a 12 mm bung on your exhaust and use the 96 sensor.

3) Buy an 18mm, 3-wire titania type sensor. Easier said than done. Not used on any North American production cars that I am aware of. NTK Europe makes them but NTK North America does not. All of the 3 wire titania ones over here are 12mm.
I believe I found one through Oxygensensors.com. It is Walker p/n: 250-23881. It is a universal type, so you will have to cut the connector off of your factory sensor.
Don't anybody go out and buy one just yet. Mine should be arriving monday or tuesday. I will follow up after I get it installed to confirm that it does the job.

I know someone is going to ask the question: Will this work on a 99???
Short answer: I do not know.
Long Answer: I know the 99 uses a four-wire 18 mm zirconia type like the 98. The nissan p/ns may be different but that just means the connector or length of wire attached to the sensor is different. You would be replacing it with a universal so that does not matter.
I have FSMs for 96 and 98, not 99. The pin-out on the ECU may be different. If someone wants to supply me with the schematic for the rear O2 sensor circuit, I can let you know.

I apologize for the long post, but since there is a GD for JWT ecus going on right now, I figured this would be useful info for some of us 98s.

 

yep thats what im looking for now i just need to find one for the 99 ecu and see if i can get it to work