Aftermarket Ecu For R34 Gt-T

[Jeremy1607]

Hi,I've a 1998 Nissan Skyline R34 GT-T with an automatic transmission.I'm looking to modify it,I've been doing alot of research and spoke to a couple Japanese Imports Specialist like C-Red and Imports 101 here in Perth.They told me because my car is an automatic,the stock ECU is a little more restrictive compared to the manual one.Recently,I've been looking at Nistune.C-Red told me that they wouldn't recommend it for an R34,and likely to have problems with tuning in the long run,it's better to go for a piggyback ECU like Haltech or something which would cost around $2,000 to $3,000 mark.On the other hand,Imports 101 told me that the Nistune is quite reliable and alot cheaper compared to the piggyback (only around $1,200 fitted and tuned).It's true that you could have problems with it in the long run but very rare or unlikely.At the moment

I have podfilter,catback exhaust and a front mount intercooler and I'm running 11PSI boost,they told me if I want to stick with the stock turbo,you could be looking at around 200kWs at the wheels.

What do you guys suggest ? Should I look for brands like Motec,Apex'i or something ? Thanks

Edited March 15, 2011 by Jeremy1607

[Randon_I_Am]

This Tuner sounds a bit dodgy at best...

A haltec is NOT a piggy back ECU, it's a complete ECU, and from what I've read won't work so well with the automatic.

I'm fairly sure that NIStune is the only ECU that will handle the auto.

nistune is NOT unreliable, NOT hard to tune and the cheapest and best option.

I've got it in my GTT running dual maps PULP98 and E85 making 290rwkw .

the 200rwkw mark is correct for the stock turbo.

[Harey]

Pretty sure there is another thread exactly the same from you. We answered in there.

Its garbage, stock ECU is the best for an automatic. You can modify all the factory automatic settings. Nistune is an excellent solution and great value. I am running it with no issues and 280rwkw. There are guys with 400rwkw+ running it.

[KiwiRS4T]

Get a Nistune. Get another tuner.

[bubba]

NIStune all the way, stay away from CRed, so not happy with their Haltech install on my wagon and the butchering of my loom they did.

Removing it in favour of NIStune (had a hiccup with a spare ECU that didn't work ) soon.

Send me a PM, I can get NIStune boards and I have a mate that fits them for me and will probably work for alcohol

Further to things said above, Haltech is not a piggyback BUT when fitting them to our auto cars (my engine/transmission setup is pretty much the same as yours but 4WD) they have to be wired in as a piggyback. The TCM isn't a seperate unit like the older autos, it is part of the ECU which means the stock ECU has to remain to control the gearbox. This is how mine was done and they did some other dodgy stuff like changed the water temp sensor to suit the Haltech which screwed up things controlled by the stock ECU that need certain temperatures to operate (VCT for example, would never engage because the stock ECU was seeing the water temp as 65deg instead of 85deg).

Also, my NIStune tuners of choice in WA would be Hyperdrive and AllStar Garage.

Edited March 16, 2011 by bubba

[Jeremy1607]

Okay,thanks.I will look around again and find out more information.

Do any of you know what's the maximum power you could get from the stock turbo ?

I want it to be as powerful as possible but at the same time I want to keep it safe for the engine (like if you run 16-18PSI on the stock turbo,the engine block can't handle it and it could blow up) and good fuel efficiency.

[Harey]

Dangerous territory bloke, this is probably the most common question asked on this forum. Do a search or look through the rb25 dyno results thread.

Max power on standard turbo is roughly 200rwkw, max safe boost is between 10-12psi.

[Jeremy1607]

Haha yeah I know,that means if I want anything more powerful than 200kWs.I need to go for a bigger turbo ? I'm running 11PSI at the moment.

Are there any other ways to make more power with the stock turbo or 200kWs and that's it ?

[paulr33]

nitrous oxide

[Randon_I_Am]

E85

[bubba]

No E85 in WA

[Beer Baron]

if you want more power than 200kw you will need a bigger turbo. that's the basic answer. and as far as fuel economy and reliability it's impossible to have them both with more power. as you make more power you WILL use more fuel. it's simple. to get more power your car must consume more air and more fuel to make it. and of course more power puts more stress on your engine so yes reliability will be reduced the more power you make. look at something like a GTRS bolt on kit. that will give you an easy 250kw. and yes the nistune is the best option for an auto R34.

[Jeremy1607]

Yeah,I understand.What's a GTRS bolt on kit and where can I find more information about it ?

And is nitrous oxide even legal to use on a car ?

Maybe I should for the Nistune first then (to make around 200kWs) ?

[Harey]

Stop being lazy man, do a search and then read through the rb25 dyno results thread. www.google.com will also answer some of your questions

[Jeremy1607]

Haha you mean,I should do research on my own regarding the GTRS bolton kit ? Okay,will do.

[paulr33]

the turbo is made by HKS and it's called a GT-RS

if you google for GTRS youll find tons of pages of random crap

if you browse in the turbo upgrade section you should plenty of RB25s with GT-RS fitted

but its not a cheap upgrade

you need to upgrade

fuel pump

injectors

airflow meter

nistune

tune of nistune (or whatever option)

turbo kit itself

tyres

intercooler

so whilist the turbo kit may only be 2.5k the other stuff really adds up

[Jeremy1607]

How much would I be looking at for the GT-RS turbo kit fully installed and including all those other parts then ?

Just roughly ?

Thanks !

[ssxRicho]

$6-7k by the time you have the parts, get them fitted and have it tuned.

[Harey]

Haha you mean,I should do research on my own regarding the GTRS bolton kit ? Okay,will do.

Just type in GTRS into the search field in the Forced Induction section and you will get heaps of info. Way more than a few people replying to your post here.

To be honest I dont recommend the GTRS kit, quite expensive and looses the factory appearance so cops can get you in trouble.

Get a hiflow turbo, GCG or Hypergear etc. Not to mention these will just bolt straight back on plus the fact they have factory appearance and about half the price of a HKS kit. Just saying this has all been discussed over and over before. So much info on here.

[Jeremy1607]

Okay,cool.Are there any other cheaper options that I can look at then ?

I mean $7,000 just to get 250kWs isn't worth it.If it cost $7,000 just to make 250kWs,how much would it cost to make around 300-500kWs ?

Hahaha