Nistune

[EJD001]

Denis, i got mine fitted and tuned at Envy Imports for $1000. was the best mod i ever did. He has the boards there, so just leave the car there for say 3 hours (mine was a bit longer as it was the first 34 he had done) just go to the massive shopping mall around the corner or go to the nissan dealership and perve on the r35's!!

[Mattw_83]

Denis, i got mine fitted and tuned at Envy Imports for $1000. was the best mod i ever did. He has the boards there, so just leave the car there for say 3 hours (mine was a bit longer as it was the first 34 he had done) just go to the massive shopping mall around the corner or go to the nissan dealership and perve on the r35's!!

[/quote

So did i with my 33. at Envy. z32 ecu . Mine has a stutter on open and close throttle. Say when you 'blip the throtte on down shift, or rev/stab from idle. Something to do with difference in what controls the tps (or something im not 100%).

Can anyone confirm this?

[simpletool]

So for Nistune on R33 RB25DET there is 3 options?

1. Use Z32 ECU (which has some issues - not really clear what they are, nobody seems to have answered that)

2. Use RB20 ECU which has no variable cam timing - which negatively affects mid-range.

3. Get a reflash

Or I could get an old Power FC for a million dollars.

Anybody have details on which might be best and why?

[MrStabby]

So did i with my 33. at Envy. z32 ecu . Mine has a stutter on open and close throttle. Say when you 'blip the throtte on down shift, or rev/stab from idle. Something to do with difference in what controls the tps (or something im not 100%).

Can anyone confirm this?

There's some info on the Nistune "Type 2 board" forum for that setup - TPS is mentioned as a key difference but for some it doesnt appear to matter.

My ignorant guess is the tune just requires a little more work on the throttle enrichment tables (which are the equivalent of a carby accelerator pump). This is something you could probably try yourself without much risk - just take a backup and save to disk first, so if it does all go to poo or you cant tell any difference you can simply restore Envy's tune.

[Mattw_83]

There's some info on the Nistune "Type 2 board" forum for that setup - TPS is mentioned as a key difference but for some it doesnt appear to matter.

My ignorant guess is the tune just requires a little more work on the throttle enrichment tables (which are the equivalent of a carby accelerator pump). This is something you could probably try yourself without much risk - just take a backup and save to disk first, so if it does all go to poo or you cant tell any difference you can simply restore Envy's tune.

Thanks was unaware of that site.. good read. but sounds unresolved. Was told it affects some more than others. Ive yet to here of anyone who has had it sorted

[STATUS]

was quoted $1150 for an R34 GTT nistune + dyno tune .. considering they're $260 seemed kinda excessive. What has everyone else paid for a dyno tune with their nistune ? Car's pretty much stock ..just the turbo back exhaust and a bit of extra boost (11.5psi)

yeah we do them for 750 drive in drive out, as do most here in VIC.

[Rolls]

2. Use RB20 ECU which has no variable cam timing - which negatively affects mid-range.

I'm making something to get around this problem, there are also several solutions on the market which will already do it but are fairly expensive from what I've read. Certainly don't rule the VCT out with a nistune, it is just a solenoid that needs to be powered, theres a lot devices with external outputs that could turn it on/off.

http://www.skylinesaustralia.com/forums/Vc...78#entry4868578

Edited October 8, 2009 by Rolls

[Dr_Drift]

Buddy club does a cheap simple VTech controller for only $94RRP.. Used with a changover relay they can be easily setup to switch off VCT at deisred rpm, have seen no downsides to having VCT switch on at idle.

Buddy Club AU Site

[Flargh!]

Ok, so i'm looking into getting one of these as well for the ole R34 GTT.

I was told i need a wideband sensor. Is that just the sensor, or do i need all the other guff to go with it? Can i just plug a wideband sensor in where the standard sensor is, and run it through the ecu and have nistune read it through the consult port as if it was stock?

[Moodles2]

Who told you that you needed a wideband sensor? Whoever told you that ignore any future advice from them, wideband sensors are used by workshops to tune cars on the dyno where they attach it to the end of your exhaust. Windband sensors have a range between 0v to 5v, Narrowband O2 sensors have a range of 0v to 1v.. even if you did put a windeband sensor in the place of the narrowband sensor, the ECU just isnt setup to deal with 0v-5v wideband range.

[darkhalf]

Mine has a stutter on open and close throttle. Say when you 'blip the throtte on down shift, or rev/stab from idle. Something to do with difference in what controls the tps (or something im not 100%)

This is an issue with both Z32 and R32 ECUs and its because the RB25 engines dont have the TPS idle switch available that both R32/Z32 ECUs require. Z32 ECU however has a limp value which it uses based from the TPS variable voltage but has the blip because the TPS transition point needs adjusting, but R32 ECU doesnt have this and wont use the idle tables at all

Herman from Envy has queried me about this and I've done some investigation and patching to the HCR32 and Z32 ECU code to use the variable voltage from the TPS to tell the ECU when the idle switch is being used. This means an adjustable transition point in the ECU adjustable from Nistune

Test ENT files for reprogramming boards are here:

http://forum.nistune.com/viewtopic.php?t=1047&start=15

Latest Nistune version 0.9.13.8 has modified address files to browse for in the /address/misc subfolder for HCR32 and Z32 adding a parameter 'TPS Trigger voltage'.

Set currently to default 1 volt, this is adjustable depending where you want the ECU to transition from idle maps to main fuel maps. I've tested this using an engine simulator on the bench, and just waiting results from workshop testing now

Sam - the aircond input problem that was noticed has been rectified in the R32 rev4 version

[Dorifta]

you guys know who makes harness extenders for the r33 instead of modifying original harness for z32

[mad082]

you would be looking at probably a couple of hundred dollars for one. if you are worried about it, just put male/female plugs on the wires you cut so you can simply plug them back into the original setup if you want to change back.

[mad082]

Who told you that you needed a wideband sensor? Whoever told you that ignore any future advice from them, wideband sensors are used by workshops to tune cars on the dyno where they attach it to the end of your exhaust. Windband sensors have a range between 0v to 5v, Narrowband O2 sensors have a range of 0v to 1v.. even if you did put a windeband sensor in the place of the narrowband sensor, the ECU just isnt setup to deal with 0v-5v wideband range.

well technically the person who told him that is correct.... sort of. we don't know exactly what they said so don't be so quick to judge. if he was to attempt to tune it himself then yes he would need a wideband sensor. he would also need the controller/reader unit to go with it. when i talk about wideband units i just call them wideband sensors, as do all of my mates. so the person who told flargh! that he will need one may be like me.

if flargh! is going to get it tuned by a tuning shop (which i am assuming is the case) then there is no need for him to purchase a wideband o2 sensor as the workshop will have their own.

[aleks]

Who told you that you needed a wideband sensor? Whoever told you that ignore any future advice from them, wideband sensors are used by workshops to tune cars on the dyno where they attach it to the end of your exhaust. Windband sensors have a range between 0v to 5v, Narrowband O2 sensors have a range of 0v to 1v.. even if you did put a windeband sensor in the place of the narrowband sensor, the ECU just isnt setup to deal with 0v-5v wideband range.

Depends,

If you not going to be playing with the nistune yourselft then don't bother getting one, but if you are Techedge do widebands with a narrow band simulated output with you can wire it in to the computer

Plus the nistune supports a whole heap of widebands.....

you guys know who makes harness extenders for the r33 instead of modifying original harness for z32

"Field" make them

http://www.greenline.jp/catalogue/bproduct...&fromlink=1

[BeEnAr]

So there seems to be alot of difference in the power that 32GTR's are making on NIStune, mine made 240.2kW ATW and 392.3Nm on 14PSI, stock engine, stock turbos, front pipes hiflow cat 3.5inch Kakimoto exhaust, K&N Panel and running on the stock boost solenoid with no spikes at all.

Linky in RB26 Turbo upgrade thread

I am in love with mine and it's also pretty cool having the consult/datascan/nistune software on the laptop because you can log your drive and have a full dash board which shows just about every dial you can thing of, even TPS and injector duty cycle and OS sensor.

[Moodles2]

Plus the nistune supports a whole heap of widebands.....

Well supports most if not all widebands, but not as a O2 sensor source, though you can get wideband sensors that have both the wiring for narrow and wideband voltage ranges.

[aleks]

You just contradicted yourself.

..... Techedge do widebands with a narrow band simulated output with you can wire it in to the computer

And I forgot PLX aswell

Edited October 9, 2009 by aleks

[Dorifta]

You just contradicted yourself.

And I forgot PLX aswell

thanks will check it out, Cant I use the stock o2 sensor to tune through nistune, or do I have to buy a wideband and run into original harness and use it through nistune, or do i buy n independent o2 sensor that hooks into laptop, or do i need 02 sensor and aftermarket display, which options are best,

Edited October 9, 2009 by Dorifta

[Moodles2]

stock o2 sensor is narrowband, 0-1v.. only useful to know if the engine is running lean/rich, but not by how much, which is where an exhaust tip mounted wideband comes in handy.. no need to have it connected to an ecu yet, download the Nistune software (enter "trial" in the username and registration boxes but wait until you've installed the rom pack first.. trial only works once) and the ROM pack (will have the basemap you want) for yourself and have a mess around with the fuel maps etc and then ask yourself, do you really feel comfortable about tuning the car yourself.