Jump to content
SAU Community

Recommended Posts

Hi everyone, I am getting a nistune and tune for my 34GTT and I was hoping for a bit of advice.

The car currently has the usual mods - FMIC, Turbo back exhaust, pod, coilovers. I have read a lot about the nistune which lead to the decision to get one, however I am in two minds about upping the boost. Originally I figured I would get the car tuned and up the boost to around 10psi, but lately I have been wondering if this will be worth it in the long run.The car has ~80thousand k's (100k service done) on it so upping the boost may cause things like clutches and other work parts to fail, and it will have that label as "a boosted/thrashed car". I have read that 10PSI is safe boost on stock parts...

So my questions are, is there any point getting the car tuned running stockish boost (and getting the most out of my mods) or should I be running 10psi at least for decent results? I am looking at buying a HKS EVC5 fairly cheap, would this be overkill?

Cheers!

Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/
Share on other sites

  • Replies 44
  • Created
  • Last Reply

Top Posters In This Topic

Well the turbo and setup will be fine for 12-14psi which will make a little bit of power, my standard clutch failed at 199kw which you will go close too BUT it will fail in time anyway so upgrade it!

HKS EVC 5 is meant to be one of the best boost controllers on the market, however mine is a peice of poo! So go something cheaper like Profec B or something! Spend your money elsewhere like on a clutch!

Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/#findComment-6487707
Share on other sites

I had a high flow on mine when i bought it so not a good comparison but ran 199kw and maxed standard injectors, went up a size and went to 250kw safely on 13psi.... Ive heard people go too 220kw on the standard injectors but my car had no sign of going there!

Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/#findComment-6487836
Share on other sites

Do it.

Get a Nistune and go to 10psi. You'll get noticeable more poke and your clutch etc will be find.

Later down the track you can do some more mods and you'll already have the hard part (the ECU) done and ready to be tuned.

Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/#findComment-6487942
Share on other sites

haha, so I am thinking I should just up the boost and do it!! :P planning to go to EFI in brissy btw.

Car has a tad over 80k on the clock with 100k service done. I get the feeling the clutch is not 100% already as it only bites in rather late on the pedal, although I have read that this is typical with 34's? It has never shown any sign of slipping while under load so I dunno.

Do I need a boost controller to adjust the boost? I can get an EVC5 for around $300 but I do take the point of maybe putting this money into a clutch and maybe just getting a boost tee?

Thanks for everyones comments.

Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/#findComment-6487996
Share on other sites

Do it! :D

Mine slipped and died at 100k

You may be able to get an actuator but a simple Turbotech would work if you want to go down that path, 300 is cheap though! (The EVC 5 is more involved in setup too i believe)

Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/#findComment-6488007
Share on other sites

I'm glad I posted because I am getting slightly excited :) I just have to decide if I should by the EBC5 I guess. For a simple application like this is it a waste? The only thing I thought would be a pro with it is a more accurate boost gauge? I've read the stock one is pretty dodge

Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/#findComment-6488166
Share on other sites

Evc 5 can be a nightmare but can also be a dream.

Eboost 1,2 or street, profec b spec 2 are easy to use and all work perfectly.

Kurtis34's old hypergear setup maced stock injectors at 235kw 6000rpm. But it had higher fuel pressure

Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/#findComment-6488198
Share on other sites

Should be fine, especially if its just street driven.

You may run into problems if you are out on a track on boost the whole time for a few laps, mainly because of the heat it will generate. The heat is what kills the wheel.

Edited by Mitcho_7
Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/#findComment-6488594
Share on other sites

Should be fine, especially if its just street driven.

You may run into problems if you are out on a track on boost the whole time for a few laps, mainly because of the heat it will generate. The heat is what kills the wheel.

Ah....no it's not. It's shaft speed. Extra heat won't help of course, but the problem with high boost is that the shaft speed heads up into the high hundred thousand rpm region and the wheel cannot take the mechanical stress.

Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/#findComment-6488603
Share on other sites

I thought the high shaft speed contributed to the Extra heat as well as adding more stress and both those factors put together ended up with the turbine wheel in the cat?

Regardless, 10psi will be fine!

Edited by Mitcho_7
Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/#findComment-6488642
Share on other sites

Regardless, 10psi will be fine!

That's all I wanted to know! I am pretty damn keen to get this done, any recommendations for boost controllers? I will be more than happy with 200kw at wheels, as I'm guessing it would be around the 160 atm, so should be a nice difference without any flat spots

Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/#findComment-6488646
Share on other sites

Yes, Nistune it!

Get a Profec B Spec 2 boost controller. They are a good little unit. The EBC will help bring on boost earlier and harder as well as trying to keep the target boost.

Replace your clutch first/at the same time.

Later on down the track, put some injectors, fuel pump and a high flow on it and pump out 250-270rwkW!

Link to comment
https://www.sau.com.au/forums/topic/407037-r34-gtt-nistune/#findComment-6488667
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Remember kids - if you can't afford to buy 2 GTRs......
    • I know people cry at the price of the Getrag 12-14k for a conversion now, but it really is a nice mid point. Not going to get change from 10k on a gearset installed.  $30k++ for sequential.   I know you run the risk of a damaged used one and parts are hard to get but as a street car gearbox its really hard to beat. If you enjoy a more traditional manual, its the choice no question.     
    • Time to decide what’s more import, your power level or your budget because you’re going to struggle to keep both 
    • Our Southern Highlands Cruise is proudly registered with “R U OK?” Day.  Sometimes the best way to check in on your mates is by getting out for a drive together. Sharing a common passion like cars creates the perfect space to chat, connect, and support each other.  A simple “R U OK?” can make all the difference. Let's enjoy the drive, the company, and look out for one another. PLEASE WEAR YELLOW FOR “R U OK?” DAY Sunday 14th September 2025 9:30AM Meeting Crossroads Homemaker Centre 10:00AM Cruise Departure Via Old Hume Hwy 11:45AM Arrival at Mittagong RSL Club Meet Location: Crossroads Homemaker Centre Final Destination: Mittagong RSL Club *Disclaimer* There will be a lead and follow car so no one should get lost. If you would like to attend or bring others along please put your name down and a +1 as numbers will be needed prior! This is NOT a race and we will all be adhering to all road rules. If this is what you want please come to one of our many track days. This is an official SAU:NSW event and will be run under a CAMS permit. One of the things that really sets our club apart is our commitment to being true enthusiasts. When on normal roads we strive to maintain good relations with the authorities as well as the public in general. When attending one of Skylines Australia NSW events please try to: • Be aware of surrounding environment and act accordingly. • Drive courteously on the state’s roads as a true enthusiast should. • Understand how important it is to maintain the good name of SAU NSW and thus, treat others accordingly. • Any misbehavior will not be tolerated and you will be asked to leave.
    • Yep, its been down for a while, as I understand it it will be back soon.
×
×
  • Create New...