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1995 Maxima Diagnostic/tuning

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Old Nov 9, 2007 | 09:32 PM
  #1  
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1995 Maxima Diagnostic/tuning

I've been look around for stuff to allow interfacing my '95 maxima's ECU and a laptop (or carputer). Now, I really haven;t come up with anything.

I was looking at OBD-II interfaces, but it looks like the 95 max doesn't have OBD-II?


Also I guess there aren't really any replacement ECU's for the max, so I was looking at the megasquirt ECU which appears to be a fully tuneable replacement ECU for any car (thus its a ***** to work with initially... as its not even close t oa drop in replacement).

Does anyone have experience with any of the above things, or have any info?
Old Nov 9, 2007 | 09:43 PM
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Originally Posted by HobHayward
I've been look around for stuff to allow interfacing my '95 maxima's ECU and a laptop (or carputer). Now, I really haven;t come up with anything.

I was looking at OBD-II interfaces, but it looks like the 95 max doesn't have OBD-II?


Also I guess there aren't really any replacement ECU's for the max, so I was looking at the megasquirt ECU which appears to be a fully tuneable replacement ECU for any car (thus its a ***** to work with initially... as its not even close t oa drop in replacement).

Does anyone have experience with any of the above things, or have any info?
ALL A32'S ARE OBD-II.

That being said, there are several replacement ECUs for the A32, or more appropriately reflashes of the stock unit. TS, JWT, etc. Megasquirt is kinda unknown territory for the most part, two or three VQ30 guys are running it right now.

EU is the best piggyback you can really get for the price, damn near a full standalone with all of its features.

Search, some info on megasquirt around here.

http://forums.maxima.org/showthread....ght=megasquirt
http://forums.maxima.org/showthread....ght=megasquirt
http://forums.maxima.org/showthread....ght=megasquirt
Old Nov 10, 2007 | 09:45 AM
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Thanks,

I was looking at those alternate ECU's... Too bad I don't have the money, But at least I can toss an OBD-II reader together and get some info...

Maybe I'll go for the megasquirt down the line, but right now, I don't know nearly enough about fuel injection etc. to be able to use it properly...
Old Nov 10, 2007 | 06:00 PM
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Originally Posted by HobHayward
Thanks,

I was looking at those alternate ECU's... Too bad I don't have the money, But at least I can toss an OBD-II reader together and get some info...

Maybe I'll go for the megasquirt down the line, but right now, I don't know nearly enough about fuel injection etc. to be able to use it properly...
I know what your talking about. I have a ECU USB cable. It cost me about 25 dollars off ebay, but it was used. I use ECU talk as the reader program, simple but works great, even displays the MPG.

Here is a pic of the one I have



I have it under the dash and ran the USB cable around the passenger seat, they sell new for about 55 dollars on ebay. So fair its been a great investment!

Last edited by clh288; Nov 10, 2007 at 06:03 PM.
Old Nov 10, 2007 | 06:08 PM
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Here is a screen shot from ECU talk


Last edited by clh288; Nov 10, 2007 at 06:21 PM.
Old Nov 10, 2007 | 06:45 PM
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Originally Posted by clh288
Here is a screen shot from ECU talk
I'll raise you one:



Old Nov 10, 2007 | 08:44 PM
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Thats pretty cool. I'm going to build this one: http://www.obddiag.net/projects.html

Its pretty simple and I have most of the parts (and I do so enjoy exploiting the sample system for IC's...). IC's are on the way, and I'll place an order from jameco to get the crystal and the headers.
Old Nov 10, 2007 | 09:15 PM
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Wow thats nice. Can you change stuff or is it just a reader?
Old Nov 10, 2007 | 09:42 PM
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That wont work on a forth gen. 4th gens are obd I. right? Nissan didnt go obd II till 2000 (5th gen)

Here is a site with info on how to make a nissan interface http://www.plmsdevelopments.com/consult_if.shtml

Here are the plans on how to make one http://www.plmsdevelopments.com/imag...lt_if_rev4.pdf

Last edited by clh288; Nov 10, 2007 at 09:45 PM.
Old Nov 11, 2007 | 03:51 AM
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All 4th gens are OBDII 95-99. I know the 95's have an OBDI connector on the drivers side and an OBDII connector on the passengers side.
Old Nov 11, 2007 | 04:32 AM
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Originally Posted by max95q
All 4th gens are OBDII 95-99. I know the 95's have an OBDI connector on the drivers side and an OBDII connector on the passengers side.
It's not an OBD-I connector, it's a Consult port.
Old Nov 11, 2007 | 04:34 AM
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Originally Posted by clh288
That wont work on a forth gen. 4th gens are obd I. right? Nissan didnt go obd II till 2000 (5th gen)

Here is a site with info on how to make a nissan interface http://www.plmsdevelopments.com/consult_if.shtml

Here are the plans on how to make one http://www.plmsdevelopments.com/imag...lt_if_rev4.pdf
OBD-II was MANDATED in 1996, so what, Nissan just said f them?

ALL A32'S ARE OBD-II, AS I SAID ABOVE.

God damnit.
Old Nov 11, 2007 | 07:18 AM
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Yes 4th gens are 0bd-II the guys at autozone are like wtf when they see my 95.
Old Nov 11, 2007 | 07:32 AM
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Originally Posted by pmohr
It's not an OBD-I connector, it's a Consult port.
It does say that doesnt it. Thanks
Old Nov 11, 2007 | 11:27 AM
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Then why do we have to use these getto nissan scanner programs and cant use the good OBD II scanners programs like most people? scanmaster ect.?
Old Nov 11, 2007 | 11:41 AM
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Originally Posted by clh288
Then why do we have to use these getto nissan scanner programs and cant use the good OBD II scanners programs like most people? scanmaster ect.?
You can use any OBD-II ISO 9141-2 (IIRC) compatible scanner on the A32. It's fully OBD-II compliant.

Consult's better though.



Good times.
Old Nov 11, 2007 | 01:23 PM
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I am talking about laptop programs.

This is what I am talking about http://www.nissanforums.com/tools/12...softwares.html
Old Nov 11, 2007 | 08:02 PM
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That is pretty sweet. I will have to try it. What is the protocol for our cars and do they sell the programmed chips?

-Mooney


Originally Posted by HobHayward
Thanks,

I was looking at those alternate ECU's... Too bad I don't have the money, But at least I can toss an OBD-II reader together and get some info...

Maybe I'll go for the megasquirt down the line, but right now, I don't know nearly enough about fuel injection etc. to be able to use it properly...
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