first mods

this has problably been asked a lot but what are good starting mods for an r32 gtr

i wanna set it up so that if i want more the aftermarket parts i got will be able to support more power

my budget is problably 6k or less
thanx

:spam2:

First where are you located?


Apexi pod, exhaust, and fuzzy dice are a must.:D

USD6k? Lemme see.....HKS air filter/HKS downpipes n super or hiper dragger/up the boost to 1 or 1.1bar/ remapping - that will set you to about 37O rwhp. Of course, at that level you need new clutch and later new suspensions and later new brakes and later.....you get the dea...:)

R33,

HKS Air Filters are really bad on filtering. Apexi are the best, and they provide better air flow. K&N are pretty good as well. Blitz are not that good, but the HKS are the worst. Just some FYI:p

R33 what Dyno was your car put on, when it was tuned?

I ask, because last year when I went to the Skyline Dyno Day, a lot of the cars that were there, were set up like what you suggested and they were only at the 280hp range?

im in us

You don't have an R32 though?

unless any hidden charges come up ther is a 99% chance im getting one
within a year or 2

Sky, you reckon HKS filter is the worst? I hv heard of that. Prolly I should change them huh?
Okay, when I first bought the car, it had Trust downpipes and exhaust/Trust filters/the boost was increased to a bit higher than 1.1 bar through a Profec B boost controller/the ECU was remapped by Jun. Dynoed it on a Dynojet...it churned out 38O rwhp and 44.1 kg-m of torque on full boost. The mix was however a bit rich so I corrected it using the F Con V and the Jun ECU was dumped - still having it, any takers?
After my big mod, I dynoed it on 2 dyno namely, the same Dynojet which shows 503 rwhp and 50 kg-m of torque and also on a Dynamic Test system which shows 564 hp and 566Nm of torque at the engine.
The GTR as we all know, in stock form punches out much more than the advertised 28Ohp. With the pod, downpipes/exhaust plus upping the boost to 1 bar and a good remapping, I think 350whp, at the least, is a real possibility.
What have you done to your car so far Sky?

I thought you were talking about the Auzzie's Dyno. With a Dynojet dyno, yes I guess you would see those power ratings:)

I am about to install a new Blitz I/C. I already have a Blitz Boost controler, re-mapped ECU, Nismo exhaust, K&N Pods. Nothing to drastic, but I really don't trash her around. I have the bitch Stang for that:)

I thought you were talking about the Auzzie's Dyno. With a Dynojet dyno, yes I guess you would see those power ratings
Now you make me wonder whether my car wud cough out only 39O whp on an Auzzie's dyno!:eek:
I have the bitch Stang for that
Bitch.........:p

R33 when you made your 503 rwhp (375kw) did the car have the factory 444cc injectors, front mount, and turbos?

Razor,

How in the world would 444cc be able to make that much power:confused:

I know R33 had HKS2540 turbos, and a HKS GT I/C.

Apart from what Sky had told you, I had Nismo 600 cc injectors aided by Nismo fuel pump. The injectors sit on the stock fuel rail...must I change the rail?

SkylineUSA you really should stay out of a question directed at someone else.

First I miss read the post, I missed the "Big Mod" part. Doh need to read better.

Second I wanted to see what mods he had done to achieve it.

Even 380 rwhp is pushing the factory turbos and the factory 444cc injectors well and truely beyond what they can handle and deliever. I know I am there at 1 bar on a rolling road dyno. I can squeeze a bit more out of her but then it am well and truely beyond what the factory injectors can deliever on the dyno that I use. At @430hp at the crank that is it. You either run out of injectors in which your air/fuel ratios sky rocket beyond 12-1 or your turbos will go bang in a major way or you lose a motor to detination or all of the above.

These are also numbers reflective of different ecus and tuning. Link, PowerFC, chipped factory ecu, piggy back systems such as the HKS and Apexi fuel and ignition controllers.

Currently as stated in my signature I am pushing just over 243kw at the wheels or @325hp. Factoring in the 23% loss through the 4wd drive system that is right on or about 425hp for this rolling road dyno. I will only go up in the air/fuel ratio as the injectors are maxed out in their flow rates and safe allowable duty cycles. The car is tuned with a Motec Wide ban Air/Fuel ratio sensor just after the down pipes.

Sure you can push more but after seeing no less than 4 R32GTR's hand granade their motors there is no sence in pushing it beyond safe.

To answer your question on the factory fuel rail I don't see why you would. A mate in Wellington is pushing just over 400kw at the hubs using HKS 25/40 Rspec turbos, 6xxcc injectors, and still using the factory fuel rail. He has the rest of the gear to accompany it but no need listing it all as it is a long list. It is a proper racing engine to say the least.

Thanks Razor for the advice. I have listed almost all the mods at www.ridejudge.com - click the wine red GTR and you cud see them.
When I bought the car, it was running 1.1 bar with a Jun ECU. Although the injectors were stock it churned out - on a Dynojet - 38O rwhp. The mix was a bit lean so I used the F Con V to correct that...the boost was maintained at 1.1 and the car ended with 375rwhp and this was also with the stock injectors. And of course, for the big mod, the stock injectors were dumped.

SkylineUSA you really should stay out of a question directed at someone else.
Sorry, Razor. Just trying to help.

380hp on a Dynojet, you really think its maxing out the stock injectors?

That is the problem though. Different dyno's give different numbers. We have proven that here though. Two dyno's. Same make just one a bit newer. The newer one produced numbers excatly 18% higher on every car that ran on both.

It is all number crunching but the fact is injectors can not flow more than they are capable of. Simple phyiscs is all. Odds are your reading would be a bit higher that reality. Same as mine. I doubt the car is producing a real 325hp at the wheels but since it is a popular dyno and his software is used by quite a few places now. Not to mention Mobile has done tests there on thier fuels using a donor car.

Either way nice figures R33. I bet the ol girl sings a wonderful song when in full song on those 25-40 turbos! The GTR has a distinc sound :)

SkylineUSA no worries mate. You do contribute hugely and much appreciated :)

This is way way way off topic, but I just thought of somthing whilst stairing at my wall ;)


R33, ever considered water injection?

R33, ever considered water injection?
Gonth, I had, actually, on many occassions. In fact I had asked SkylineUSA about it on this forum too. It sounds cool, pardon the pun! In theory at least, it sounds workable. But I wonder whether the water or water vapour wud harm the engine/piston etc? And what is the performance gain exactly? Is it worth the trouble? These are the questions which bug me. My mech says the performance gain and benefit is not worth the trouble. Can anyone advise me or share his/her experience?

I wonder whether the water or water vapour wud harm the engine/piston etc?

Water injection will make your engine clean, very clean internally.


Water injection by itself does really give any gains, its the ability to turn your timing up that gives you the hp gain.

Now, say your turn your timing up with the W/I and you run out of water, you better throttle back or your going to blow a hole in your piston, also if you have stock turbos they just bought the farm as well. With that being said, I can't wait to install one:D

I will just wait for your report then.;)

What is water injection?

Its like a N2O shot, but use water.

Probably the best system around www.aquamist.co.uk read up on it

How does the water not foul your mixture or ruin your plugs?

Let me ask you this.

How does the engine fire on the power stroke if it has water in it? :confused:

I ask you the question, to make you think a little. Not to be a jerk:)

Is that question to me? I hope not, because I don't understand it (please reword it and I'll understand...)

Originally posted by SkylineUSA
Probably the best system around www.aquamist.co.uk read up on it

Yea, it's pretty damn affordable too. It'll probly end up on my wish list next year or so :D

And the problem with running out of water can be solved... Just add a gauge :) And have a digital boost controler with different settings. ie. Pump Gas, W/I Pump Gas, Race Gas, ect ect. So if you happen to run out of water, or run low, just dial up your normal boost.

Actually a Boost/Timing retard will work as well. I have one on my stang. You just turn the knob, and you can drop your timing by 15*

With the Boost controller you can do the same thing, just turn down the boost, right.

I know a guy with a R34 has the system installed, but I have not had a chance to talk to him about what he thinks.

The whole object of water/menthonal injection is to cool the inlet charge on a turbo charged car. While some have used straight water, the better systems is a menthonal/water mixutre that is injected around the throttle body area in a very fine mist. Mind you it is not a lot that is used so the thought of water/gas mix is simular but not the same as if you were to get a bad tank of fuel

By cooling the mixture charge in the cylinders you are able to produce more boost without detination thus making more hp. If you will it would be like a poor mans racing fuel which has a higher temp burn rate than normal fuels.

Hey,

I am a Poor Man.

Seems most GTR owners are or they wind up poor :(