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NisTune Is HERE!!!

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Nistune
Nistune is now supporting 90-95 v6 pathfinders (and pickups). The owner of a 1995 reached out to me with the good news! He's running a VG33 and his 1995 Nistune'd ECU has been tuned to run the vg33er (supercharged xterra/frontier) MAF and injectors. I immediately bugged Matt (from down under) at Nistune and he said yes my 1993 is now supported (90-95). I ordered my board from Past Power Innovations (previously ASCO) and I should begin install this week.

Disclaimer
DIY ECU socketing is NOT recommended for the average hobbyist, mistakes can set you back hundreds of dollars and weeks in international shipping. Typical installers might charge $80-$100 on top of the board itself ($240) which is cheap insurance if you have any doubts about your own skills or equipment.
Still wanna DIY?

If you've never done anything like this before I suggest you Grab a cheap spare ECU from the junk yard, make sure it works and drives properly with no codes. De-solder the ECU chip, remove it, put it back in and re-solder it. Does it still work and drive properly with no codes? You will either fly or fail and then you can make a more educated decision.
Helpful tip: Read the Nistune Soldering Guide and use 63/37 Tin/Lead Rosin Core solder 0.030" if you can get in your country. (USA can) (60/40 Tin/Lead also works very well but avoid the lead-free stuff if you can)

What does it do?
This is most beneficial to those boosting or making over 200HP. Stock ECU/MAF/injectors will take you to 200HP without modification.

The main purpose is to give you complete control over fuel and timing. It will also allow you to make injector size changes and MAF changes. (Like my favorite combo: 344cc injectors and Z32 MAF) Beyond that, there are lots of other parameters that vary by ECU model and what's been "decoded" for that model. Some examples are:
 

-electronic idle speed control

-the ability to add timing-based Idle stabilization

-rev limits

-safety rev limits (neutral/park)

-AFR's during warm up

 

Nistune Type 1.jpg

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Nice! Looking forward to seeing this in action. I'm curious how much Nissan left on the table when they tuned these things.

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I got all the conformal coating (clear insulation) cleaned up around the working locations on the ECU. It looks like Nissan put it on twice as thick on the pathfinder ECU's.
Amazon Prime has me waiting 1-2 weeks for the things I need to go any farther. I placed the order last week and it said get it by the 12-13th... Now it says expected the 16th and Friday it will probably say arriving Monday... ANYWAY stay tuned, and I will update when I get to make progress again!

 

2 hours ago, Slartibartfast said:

Nice! Looking forward to seeing this in action. I'm curious how much Nissan left on the table when they tuned these things.

I can tell you from the Nistune'd M30 ecu I had in my '89 that Nissan likes to error on the side of caution.

Timing was good under light load but a little more conservative under heavy load. I'm fine with this, esp for towing.
Fuel under acceleration was richer than 11.8:1 which is too much, it won't hurt anything but it leaves some power on the table for the N/A tune.
Reducing fuel to 12:1~12.5:1 provided noticeable improvement. This improvement was measured using an RPM triggered stop watch built into the software.

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Is the ECU for the 95 any different than the ECU for the later VG33 pathfinders? Is it possible that we could tune pathfinders/qx4’s from later years so long they are VG33’s?

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No, VG33 ECU's are completely different.
Getting support for an unsupported ECU involves talking Matt into supporting vg33 ECU's while he still has MANY other supported models on more popular tuning platforms and thoes take priority. Getting support for 90-95 pathfinder took decades... And after having a look at the bin files, it still needs development...

My solution, before this, was to run a supported ECU like the M30. This requires a rewire but i was converting an 89 to fuel injection so I was doing a complete re-wire anyway. Re-wiring for a 90-95 ecu will let you ditch annoying things like EVAP sensors and other extra crap they added to the vg33 but it might also effect tach/speedo function if they were tied to the ECU.

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Type 1 boards support the WD21 ecu now?

 

Hell yeah!

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UPDATE: I completed install on Friday but there was a communication hiccup and this daughter board will not connect to PC.
There are a few vehicles that need "Special Order Boards" modified in-house by Nistune Developments, Australia The pathfinder is one of those vehicles. More info here: NISTune Tech Bulletin: Special Order Boards
Looking like a week and some change for the Special Order Board to arrive.

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Was that you that posted pics of the board on facebook?

 

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Yes

 

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Interesting..So to special order a board I would have to talk direct to Nistune? I'm going to be swapping a VG33ER here soon and was looking at doing a diy Megasquirt later down the road but this catches my interest to get it running up sooner than later.

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You you can order directly from Nistune website or you can talk to a more local Nistune vendor but they will need to source a special order board directly from Nistune Australia and make sure they know that.

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I hate wait.
image.png.39248b885fd23adbb316a415c4740eef.png

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