Nistune Daughterboards For 33gtst Only

[robots]

Z32 ecu will start up your car even if you didn't do the wire swap. Starts right up. Anyone to comment on the fuel temp thingy ? And I think the TPS issue is being addressed now on nistune forums by matt.

[buzzboy]

Adam - you are using a test ENT file that I provided to Pete. It should be TPS idle < 1 volt and then use the fuel maps above this. However 1 volt was a starting point, after some discussion tonight about 0.9 volts should be used. Suspect that the TPS trigger may be backwards hence the problem. I'll retest the firmware changes and probably get Pete to recheck on Monday. Unplugging TPS makes the car drivable in the interim

In regards to R33 daughterboards, as per the picture:

This is a Techtom daughterboard installed into an R33 ECU. The main 84 pin MPU is removed and a 84 pin transition socket is fitted to the ECU. Then carefully the board fits into the 84 pins on the transition socket and the MCU is plugged into this daughterboard. The daughterboards are very expensive and emulators used to tune the ECU and then an EPROM chip is burnt afterwards

Workarounds to this is like Toshi does - use the board to tune and then remove the original MCU and reprogram a blank MCU with the tuned maps. The blanks are about $80-$90AUD each and burn once then throw away jobs. An EPROM to MCU adaptor is used to program these PROM MCUs

Making a Nistune equivalent with 32KB NVsRAM is no easy task. The transition sockets alone are very expensive and require expert installation to fit to the ECU. On top of that is reverse engineering the existing operation (which I kinda got sussed) but then there is the design effort, mulitple logic chpis and the effort in putting a prototype together. The consult speed is slower (less buffering) and sync and cell change speeds may be affected.

This is not an installation process which most workshops would be able to do, even EPROM boards which I've fitted for dr drift have experienced problems and after checking all connections, something like a single coil etc shown not to work due to track problem on the board or even a pin not connecting properly on the MCU to the socket. Its not reliable and very difficult from a support point of view

The Z32 ECU works well, and even skimping on swapping injector lines not not appear to impact the running of the vehicle. The TPS transition from idle to fuel map is something we are making configurable for completeness with this type of install

My r33 s2 has had the EPROM boards installed in it and tunedt. before the tune it would from time to time miss. after the tune it disappeared for a while but again started to miss- this happen no more then 10 times over 8mths.

After doing a bottom end and rebuilding the engine i put a stock ecu back in and turned down the boost back to stock . after the rebuild and putting in another stock ecu the car now runs like a dream - my question is, do you think the missing was from the stock ecu being broken or the EPROM board or the tune being a little out . my other question , what issues have you had with the EPROM board - im looking at putting the modified ecu back in and going for a tune again but don't know if i should just go down the z32 path now .

Edited October 12, 2009 by buzzboy

[Mr Jollwah]

I was going to order an rb20det ecu today because the Z32 looked liked it had too many issues. What things would I have to worry about if i used the Z32 ecu? Changing over the 6 wires is easy as and dosn't bother me. Seams like the TPS issue is also sorted? What about engine temp correction I read some where the Z32 does this via fuel temp and wont add more fuel if used for the rb25. Am I then better off using the RB20 ecu and hooking up a VCT controller?

Engine temp correction is the same eg. uses the coolant temp sensor. The fuel temp sensor does bugger all and the fault code can be removed by wiring in a 330K resistor to ground from the ecu pin 36.

Other than that some find that the exhaust temp light comes on when they turn on their aircon, if so cut wire at pin 33.

The z32 only uses one knock sensor if you do not change the wiring at all the front sensor is used, I would use the rear sensor wich means you need to splice wire from pin 24 onto pin 23.

[SXY_33]

hey Mr Jollwah, i noticed ppl do that. y?

and should i change the power steering pin??

thanks

Adam

[Mr Jollwah]

hey Mr Jollwah, i noticed ppl do that. y?

and should i change the power steering pin??

thanks

Adam

People change over the knock sensors because the rear sensors are the ones that are most likely to detonate, due to air flow distribution etc.

As for the power steering, IIRC the r33 ecu plug is missing the pin to go to pin 34 on the z32 ecu. I used a harness extender.

[SXY_33]

thanks for that.

[D_Stirls]

I have seen somewhere that there are ECU looms that you can use to make up an adaptor loom rather than cut the factory loom. So they are a short section of loom that have a male ECU plug on one end and a female plug on the. Does anyone know where these are avaliable?

EDIT;

Found it;

http://www.rhdjapan.com/jdm-low/FIELD-One-...issan-PT1-55225

Edited October 19, 2009 by D_Stirls

[SXY_33]

I have seen somewhere that there are ECU looms that you can use to make up an adaptor loom rather than cut the factory loom. So they are a short section of loom that have a male ECU plug on one end and a female plug on the. Does anyone know where these are avaliable?

EDIT;

Found it;

http://www.rhdjapan.com/jdm-low/FIELD-One-...issan-PT1-55225

I actually made my own loom extension. since i had a busted ecu i opened it up and took off the blue socket, then when to jay-car found some plugs that fit and about 10m's of wire and got soldering. cost me round $15 - $20

[darkhalf]

Z32 ECU modifications without modifying the loom... see document here. With pictures!

http://forum.nistune.com/viewtopic.php?p=8386#8386

We have covered each wire and the differences/what it does. In theory you can get away without changing anything, but some of these wiring changes are advised

[daisu]

I just bought a nistune, installed it into the Z32 ECU with the intention of using it on my RB25/30.

In the mean time I thought I'd try it out on my current RB20. I swapped wires for injector 2 and 5 (didn't bother with the other wires such as O2, knock, powersteering pressure etc as I just wanted to see whether it would run the engine or not) it started first go, albeit probably very rich or lean.

So as soon as I get a consult port wired into the car and a wideband sensor, I'll do the other wiring swaps, and see if I can bring the old RB20 to life.

Edited October 28, 2009 by daisu

[Mr Jollwah]

Z32 ECU modifications without modifying the loom... see document here. With pictures!

http://forum.nistune.com/viewtopic.php?p=8386#8386

We have covered each wire and the differences/what it does. In theory you can get away without changing anything, but some of these wiring changes are advised

I like the changes made to the ecu itself .

Very clever..

[adis]

Can i ask, what KW am i expected to roughly make using z32 on stock injectors? Thats assuming that i have all supporting mods to max out injectors, which i believe i do.

(ps, sorry i had to dig out old thread, but couldnt really find my answer after 1h of search).

Edited July 6, 2010 by adis

[jrm]

I was under the understanding that you'd max out the injectors around 220rwkw...

They typically work this out based on the size of the injectors. Obviously you can always bump up the fuel rail pressure, etc - but yeah. So on an RB25DET with 370cc injectors, multiply 0.7456 by to get KW, then by say about 80% to allow for drive-train loss .. works out to be about 220rwkw. Mind you, that's at pretty much 100% duty cycle, which most tuners would prefer to avoid ...

[Rolls]

Depends entirely on your dyno, if you are running the standard turbo I would imagine anywhere from 170kw to 200kw depending on whether the dyno reads low or high. Also depends on how good the tune is and the condition of the motor.

[adis]

Depends entirely on your dyno, if you are running the standard turbo I would imagine anywhere from 170kw to 200kw depending on whether the dyno reads low or high. Also depends on how good the tune is and the condition of the motor.

turbo has been hiflowed.

Other mods: coilpack, exhaust, pod with 3inch intake, FMIC, Boost T,

With z32. Just wondering what to expect this friday.

[Rolls]

Being as 'highflow' can mean absolutely anything then there is no way to guess.

[Daboss]

Z32 ecu will start up your car even if you didn't do the wire swap. Starts right up. Anyone to comment on the fuel temp thingy ? And I think the TPS issue is being addressed now on nistune forums by matt.

About fuel temp sensor, you just have to wire in a resisitor to that point on the z32 ecu and it will be fine. Will get the exact resistance when I get home as I can't remeber off hand.

[meet07]

I just fitted a worked z32 ecu with nistune on my rb25 over here in the states and its pretty amazing how easy it works. Even with the Ford Lighting MAF running blow through. Im running the factory injectors but next year the fuel system will be getting a major upgrade to run e85 = )