Nistune For R34 Gtr?

[snake]

Is anyone running a nistune ecu set up in their r34 GTR and willing to comment on their experiences with it???

Considering trying it in my own car.

[The Mafia]

I'm also interested in this.

I might even get a copy of the nistune software and have a look at what features the nistune gives the R34 ECU that are tunable.

oh, and I'm a tuner mate - and I only deal with good shit. Sick of tuners only pushing haltech or some crap because that is all they know. I've seen fools cut a Ford XR6T factory ECU out and "wire in" a haltech because they had no idea how to edit a factory ECU, and we all know the XR6T ECU is by far the best ECU for it.

Its what is the most functional for the user \ car owner.

[bubba]

AFAIK you can't NIStune a 33 or 34 GTR ECU.

Type 2 boards cover the following earlier consult vehicles:

M30 Infiniti (VG30DE)

ECR32 Skyline (RB25DE)

ECR33 Skyline (RB25DET)*1

HCR32 Skyline (RB20DET)

BNR32 Skyline (RB26DETT)*2*3

Q45 Infiniti (VH45DE)*4

U12 Bluebird (KA24E)

Y60 Patrol (TB42E)

Z32 Fairlady 300ZX (VG30DETT)

*1 ECR33 RB25DET Skyline can use HCR32DET ECU (no VCT) or Z32 VG30DETT ECU (internal modifications required)

*2 BNCR33 Skyline requires BNR32 RB26DETT ECU and O2 sensors

*3 BNCR34 Skyline requires BNR32 RB26DETT ECU, O2 sensors and CAS wiring modifications

*4 Q45 VH45DE (1990-1992) using removed high gear maps

So everything a 32R NIStune can do.

[The Mafia]

hhhmm.

I wonder if they are much different software wise, other than the R34 ECU being modified to take to the newer o2 sensors and the CAS wiring.

I definitely wouldn't want to hack up a R34 GTR wiring loom, so I would buy a second hand R32 GTR ecu and internally mod it for the CAS. Its not hard, I made a R32 GTR powerFC work fine in a R32 GTS-T.

[snake]

You do have to run the r32 GTR ecu but it seems that it plugs straight in and the only mods being the CAS and o2 sensors.

The pins in the 34 cas plug only need swapping around to make it run with the 32 ecu.

As for the o2 sensors, read the attached. Im assuming the 33 o2 sensors would be the same as the 34's.

R32 GTR ECU on R33 GTR.pdf

[snake]

Something else i wanted to know to, will running the r32 gtr ecu affect the multi function display on my dashboard????

[The Mafia]

I would definitely get a nistune if I had a R34 - I want to keep it as stock as possible.

Plus, I wonder if the nistune can run the on dash display without any problems?

[bubba]

NIStuning a 33GTR is the same as 34GTR except 34GTR needs the CAS wiring changes.

As for the MFD, I guess it would be a matter of figuring out what signals it needs from the ECU and ensuring it continued to get those signals (pinout for each ECU and one for the MFD and some head/nut scratching) at the correct voltages etc.

[darkhalf]

Bubba - Just a matter of swapping the CAS signal wires over on the BNR34? Nissan seem to change these over on different ECUs I've found

[bubba]

Bubba - Just a matter of swapping the CAS signal wires over on the BNR34? Nissan seem to change these over on different ECUs I've found

Between models? or between different 34GTR ecu's?

[darkhalf]

If plugging in a BNR32 ECU into a BNR34 do we just need to swap over the 1 degree and 60 degree CAS wires to use this particular ECU? Is that all is required in addition to internally modifying the ECU. If so this is good and I just need to update my documentation to suit for people that want to use Nistune on a BNR34

When I meant about Nissan swapping the CAS lines over between models for example S15 ADM and S15 JDM have their CAS wires swapped over on the same two pins. This may be because of having NATS in ADM model

[bubba]

Hmm interesting..

I was just working off your documentation Matt, I haven't done a 34GTR yet.

Pretty much all the NIStune installs I have done are Type-4 boards in either 34GTT's or s2 Stageas.

Type-2 board is in my 32gtst's ECU and I will be kicking that in the guts next week.

[darkhalf]

BNR34 ECUs also have NATS just remembered hence why the CAS lines are probably also swapped over (just a theory)

[STATUS]

^^ yeah ive retro fitted r33 pfc's into r34 few pin swaps is all..

[The Mafia]

So are there any firm instructions on how to get the BNR32 ECU to work in a BNR34? Ie, all wiring mods needed?

I have one here ready to be nistuned but don't know for sure what needs to be done. I have only seen instructions for the BNR33.

[The Mafia]

okay, all done. I have a nistuned R32GTR ECU running my R34 GTR. I have spoken to Matt from Nistune for some help and regarding what was needed to be done. The car runs absolutely perfect with the R32 GTR ECU.

Compared to the powerfc:

- Starts faster

- comes to idle so much quicker

- idle is heaps more stable

- car just generally runs better

After tuning the rest of the map, it runs really well.

Regarding how I did it, It is a little more than just swapping cas wires -

Differences between wiring:

Pin 8 - Ignition switch (IGN) (R34) / Pin 45 - Not used (R34)

=> Wire pin 8 to Pin 45 (R32 ECU)

Pin 10/20 - Not used (R34)

=> Pin normally for Ignition GND (R32 ECU)

Wire 10/20 to pin 50/60 to provide the R32 ECU with an ignition ground reference. After this R32 ECU will work fine in R34 ECU after speaking to Jono today and getting it working

Pin 31 - Not used (R34)

=> Wire needed to be added for consult CLK signal (R32 ECU)

Pin 41 - Camshaft position 1 deg POS (R34) / Pin 51 not used (R34)

=> Swap to 42/52 on CAS 1 deg POS (R32 ECU)

Pin 42/52 - Camshaft position 120 deg REF (R34)

=> Swap to 41/51 on CAS 120 deg REF (R32 ECU)

Pin 54 - IMMU/NATS (R34) - Don't worry about this

=> Not used (R32 ECU)

Pin 115. Heated O2 sensor control signal

=> This pin not used (R32 ECU) so wire to be connected to pin 50 (control unit ground) on R32 ECU

[GTSBoy]

What about the MFD question?