R34 needs modding!

[AGIT8D]

Lads, my mate's just imported his own R34. Looks like it may have a set of wheels on it and a catback, that's about it..

He's got a FMIC kit on the way with a Walbro pump and Pod etc, but I'm trying to help him get the next step of mods planned as he's ready to roll..

Looking at some sort of turbo package that will suit a daily driver, ie not a GTRS turbo as I think it'll be too responsive and boring but not something that he has to make a coffee it's taking so long to spool up because the car will lose all it's fun that way and be a pig to street around.

Possible benefits/disadvantages to getting a turbo that will suit the stock exhaust manifold? Benefits/disadvantages (cost aside) from running an externally gated turbo over an internally gated one?

A bit of a cost breakdown of injectors, Pfc, tune etc... Coilpacks?

It's been a while since I've tinkered with boosted cars and even longer since I've paid attention to what turbos suit what and even which ones compare to others.

Any help here and experience/proven track/dyno records would be great so I can pass them onto him and hopefully he can get everything ready and waiting for when he takes delivery in 3 weeks (car has just landed).

Cheers!

[RGVFAST]

gt30r/gt35r be perfect get around 400 rwhp comfortably

[AGIT8D]

Will it be a dog though? What supporting mods are required? Walbro, injectors, fuel reg, pfc, coilpacks?? Manifold? Is that an external/internal gated turbo?

Like I said man, been out of the import game for a long time and any cool part numbers or codes I used to know are irrelevant/forogtten...

[Brett_J]

GTRS would be perfect, come on song early with a nice whack of power, I think Rodgers (Cake) is running one with around 350hp atw, I drove it and it was great for a daily, spun the treads easily and pulled harder than TJ with a Chrisco catalogue.

[AGIT8D]

While I'm here, he's been advised a Vipec computer is the way to go.. Comes with map sensor boost controller antilag flat shifting launch control etc etc etc... Thoughts? I dont know anything about these.

[AGIT8D]

GTRS would be perfect, come on song early with a nice whack of power, I think Rodgers (Cake) is running one with around 350hp atw, I drove it and it was great for a daily, spun the treads easily and pulled harder than TJ with a Chrisco catalogue.

These bolt up to the stock manifold don't they? Though gains could be had from getting an aftermarket manifold..

I thought gtrs would've ran out of puff up top, not the case?

[matt_2jzs13]

gtrs sounds like itd be a bit small for what he wants

im going with rgvfast, gt30/35r would be perfect. use the .63 rear housing for response and it will be plenty of fun
need pump, injectors, fpr, manifold, possibly gate (he could get an internally gated turbo but thats no fun) and yer definitely some coilpacks

ive got myself a vipec, havent run it yet, but from everything ive read they are a fucking awsum ecu, and like you said comes with all those features, and you dont have to pay to unlock them like you do with motec. id go with vipec

[AGIT8D]

Is it a single or dual stage boost controller?

I will look into the 30/35r's cheers.. External gate is ok will just have to be plumbed back I think as it's getting driven daily in freo and cops will probably jump on him for shit like that..

Anyone got ballpark figures for some of this stuff? :)

Already got pump, fmic, pod etc.. Josh can probably knock him up the dump, front pipe etc etc so those costs dont really need to be listed.

[upgarage]

cheapest way would be to get a 2nd hand xr6t turbo
then the rest of the shit you'll need
6boost mani
injectors/fpr
gate
screamer pipe
dump
turbo lines
cooler piping
computer (powerfc?)

[AGIT8D]

yeah 3540 might be the go.. will the stock xr6t exhaust housing provide any issue on an Rb25 tho? I know some of the ford boys get em swapped for something else..

[cactus]

My turbo package, I can even take you for a drive as its still on the car :)

[AGIT8D]

He's keen on yours bro, I'm just investigating what else is out there as he's kinda relying on my input here to get a decent package. I don't wanna tell him that's the best option and then he hates the car cause it's a laggy pig and doesn't suit driving to work etc..

Would be keen to go for a spin in the car but it's a bit different with a 4k stall and auto to a manual haha. Regardless it's something we might have to look into, making the journey up your way or whatever.

[cactus]

Haha yeah its all good I'm just stirring! I would want to make sure I had as much advice as possible when making a decision which involves a fair few dollars too!

[DCIEVE]

I wouldnt even consider the xr6 huffer - laggy dog of a turbo on a 2.5/2.6l motor.

Low mounting something internal gate will be the way to go if your concerned about police attention. Keep it as stock looking as possible and you'l avoid any worries about getting it over the pits when the car gets stickered.

Im not sure how people can lump 30 and 35's in the same sentence... big difference there. One of the smaller gt30's (3076?) would be about as laggy as I'd want to go on a daily driven car. gt35 is far to big imo.

[Alt_F4]

Will it be a dog though? What supporting mods are required? Walbro, injectors, fuel reg, pfc, coilpacks?? Manifold? Is that an external/internal gated turbo?

Like I said man, been out of the import game for a long time and any cool part numbers or codes I used to know are irrelevant/forogtten...

Running thread (5 years) on SAU for power/setup/supporting mods for rb25s should give you something to chew on :)
http://www.skylinesaustralia.com/forums/-t55845.html&

[datsqik]

I would go something like a gt30 turbo used with the r34 turbine housing, 3" exhaust, larger injectors, fmic, z32 maf and either a power fc of find a z32 ecu and use the nistune software and daughter board. Some rewiring has to be done on the z32 ecu swap. A mate had this setup in his r34 and ran a safe 330rwhp on lowish boost for the last 3 years. Wasnt to laggy and still has plenty left in it for when he builds a forged motor. A Clutch is something else he will need almost straight away.

[AGIT8D]

Smiley - A clutch is definitely on the cards.. having driven [TWEAKS] white R34 a fair bit I've got an idea of how far my mate should push this car and it's really a big toss up between highmount ext gate and lowmount int gate at the moment.

I don't wanna sway him towards a highmount if it's only going to be a dog to get over the pits. Do the pits hassle you for a highmount? I notice j3rk got the supra over so I'm wondering about this.. As long as exhaust was back to stock etc I wonder how much of an issue it would be.

Can only seem to find GTR Power FC's at the moment so we'll see what happens with the ECU but may have to go another route if something doesn't pop up.

infamous - I'll have a dig thru that thread mate thanks heaps for linking that up. If it gets too tiring I'll pass it onto my mate to have a read thru!

Cheers for the he so far boys, if anyones got anything else to add please do!

[cactus]

I would go EMS stinger, get Mick to wire it up. Bombed ECU.

[AGIT8D]

Pfc is appealing cause it's pretty much plug and play.. Like the vipec, needs to be wired in. He's pretty much gonna collect everything then swap it all over at once and send it in for ecu, tune, fuel..

[PAGZ]

pfc is good if u can get ur hands on 1.. ive heard good things abt the vipec though

[Evilteddy]

r34 gt-t PowerFC's are available, just expensive.
vipecs i have heard are good.

If he's not exactly going too overboard what about nistuning the standard r34 ecu?

Basically gives you everything a PowerFC does without Rotational Idle and a few other little bits apparently.

[Lonewolf]

id prefer nistune over pfc, proper knock retard vs flashing the CEL when if it knocks.
can still upgrade injectors, afm etc with this setup.

[AGIT8D]

Might be something to look into then.

Basic idea is upgraded fuel, turbo, intake, exhaust, maybe cams later on.

What shop would you guys recommend to get to handle the nistune?

The benefit of the vipec was the boost controller etc all inbuilt but its prob not dual stage anyway, which he wants. the other shit like launch control, antilag and flat shifting he probably won't use. rotational idle sounds cool but he won't need that either, so a basic tune will be the go.

[Alt_F4]

Pfc is appealing cause it's pretty much plug and play.. Like the vipec, needs to be wired in. He's pretty much gonna collect everything then swap it all over at once and send it in for ecu, tune, fuel..

Nistune is all thats needed, unless you want to ditch the afms, in which case the vipec is a great proposition... its plug in also, not wire in.

[cactus]

Mick @ Ovaboost.

[Lonewolf]

Might be something to look into then.

Basic idea is upgraded fuel, turbo, intake, exhaust, maybe cams later on.

What shop would you guys recommend to get to handle the nistune?

The benefit of the vipec was the boost controller etc all inbuilt but its prob not dual stage anyway, which he wants. the other shit like launch control, antilag and flat shifting he probably won't use. rotational idle sounds cool but he won't need that either, so a basic tune will be the go.

ASG
Not sure if they can alter the factory boost control solenoid with nistune.

Anyway, you can get a nistune + decent boost controller for less than the price of the vipec I expect.

Agreed that vipec would be a good option if you want to ditch the AFM, and squeeze every last bit of power out the motor.

[Evilteddy]

AllStar Garage did the Nistune on my GT-T ECU and i've never been happier.

[AGIT8D]

Good to know lads, that's probably the way he'll go then. Will obv need z32 also..

And yeah dual stage boost controller so he can keep it low down and not kill himself for a while... na s13 to big turbo r34, least he's got the right idea bout doing ahg days n shit to learn how it goes!

[DCIEVE]

Plenty of people get over the pits with highmounts etc but if the inspector decides to pick on you its back to stock or engineering/emissions testing time.

[DISTRBD]

I would go EMS stinger, Bombed ECU.

I run the 8860 on my NEO 25 and new 34 racecar will run the same setup ... good ecu and Hyperdrive have done a awesome job on the tune :boink:

[datsqik]

The nistune works well in most applications and good value but if he wants to get rid of the maf's then id also recommend the EMS. I recently tuned an engine with 12 1600cc injectors and it controls them no problem and has plenty of aux in/outs.

[SimonR32]

Garrett GT3076R high mount or a HKS GT3037pros low mount, best 2 turbos for stock rb25's

i would go a nistune, its a lot cheaper than other options... but u will need a z32 afm

[DISTRBD]

Garrett GT3076R high mount or a HKS GT3037pros low mount, best 2 turbos for stock rb25's

i would go a nistune, its a lot cheaper than other options... but u will need a z32 afm


What do you run on your 25 ???

[AGIT8D]

Hes put an offer on cactus' 3040R, thoughts? :)

[datsqik]

Whats cactus about it?

[PAGZ]

Mick @ Ovaboost.

+1 go talk to him about it

[AGIT8D]

Whats cactus about it?

HAHA! Kidding? " cactus' " ie cactus's 3040R.. It's 5000km old should be sweet !