NisTune Info (link)

Yep, and unfortunately I am several months from being able to use my 84NA Nistune ECU.

Matt used to have the price on the site. Apparently he is considering some pricing changes?

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[quote]Bernardd wrote: The 88-89's have a 16 bit eeprom setup that's easier to tune yet the factory tune is inferior to the previous years' ECUs because it's setup for the smaller t25 turbo.

Since this seems to be a fact in question, where did you get that information. I consider what Bernard says on this subject to be near proof considering his experience. So if you disagree, I'd love to see where you got that info.

[quote]Steve88t wrote: JWT… but I guess considering their record it could be wrong

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So if I wanted to use Nistune there would be no actual performance advantage for me to use an 88-89 N/A ECU in place of my 84 Turbo ECU?

[quote]FlawleZ wrote: Price is AUD$300, which is about USD$230, S&H not included. This is from Matt's email about a month ago.

Considering the alternatives, that isn't a bad price. This is only the second advancement for z31 ecu's since jwt started selling his shit O-so-many years ago. I think when they become publicaly available a BUNCH of you should buy them. I will.....

I'm not at all sure how to alter the voltage circuit on the earlier (pre 88) ECU's to allow maf/VQmap changes away from the stock MAF. I'm sure someone has or will figure that out though.

Count me in. Heck, the market going rate for the 88T/NA ecu is around $130. One guy on Z31.com told me he wanted $200 for it. And thats just the ECU, forget about all the other Romulator costs on top of that. Yes, $230 for the whole package is nice and reasonable…I'll start saving for it now.

[quote]Jason84NA2T wrote: what about figuring out a way to signal boost regular MAF signals the 2v or so.

I'm talking about bringing the "normal" 0-5v signal to 2-7v's like the ecu's expecting.

In theory, that would get you around having to find the resistors to cut out.

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hey guys

just joined up. bernard forwarded me the link to this page. just to let you know what the deal is with the boards

the current version of boards (rev b) as pictured on the website require a pocket romulator and will work in 1986-1989 Z31 ecus.

i dont think there are any Z31 ecus I can't do. Also I'm not aware of any 16 bit Z31 ecus. the 16 bit ECUs started happening when JECS moved to the MELPS processors after Hitachi got sued by Motorola for ripping off the 6802/6303 processors used in Z31/Z32 ecus. hence only late model Z32 ecus are 16 bit.

these revb boards are the $300AUD mark with the software and installation instructions. i have about six of these left.

currently support three different wideband units (zeitronix, techedge and innovate)

the software should run on any PC. it was written for small size and high speed

was orignally developed on Win98 and still runs this on a daily basis on my test bitch P266 Compaq Laptop with 64MB RAM. It could probably even run on slower machines since the most cpu intensive thing is the logging part of it. It can also run on Windows XP as that is my other dev machine

The revb board itself provides a communiations interface to the ecu to let us read the engine parameters (implementing a consult interface). using a romulator lets you tune in realtime. when you are done, you need to burn an eprom afterwards with the tune



The next generation of boards (revc/revd) in testing are NVRAM based. this means no external emulator (like pocket romulator) is required. you just plug the board in to a socket where the ROM used to sit, solder up 4 wires to the CPU and put in the USB port where the diagnostics connector normally sits and reinstall the ecu

This means you can just plug in the USB connector when you wish, and monitor or change in realtime parameters on the ECU. when you are happy with the changes you 'burn' them and less than 0.01 seconds later they are saved. You can do all this in realtime with the engine running, unlike other products out there for nissans. It pretty much works but I need to get it all checked before i get a batch of them made up. Those will be about a month or so off depending how much free time I get :wink:

cheers
Matt

[quote]Jason84NA2T wrote: I've figured out how to change the Timing and Fuel Maps on my 84T ECCS.

I've also figured out how to convert it over to use the 28DIP EEPROM, just haven't worked on it enough to figure out all the new address's.

As far as the voltage circuit on the MAS, it's easy. It's a voltage divider (scaler), just like the later models.