Hks Gt Rs Turbo Results 532.5rwhp.

[Emre]

Hi Mark,

My car have the ususal turbo back, Trust front pipes and HKS Hiper to be precise. The other car used to have a similar setup but changed the setup later on.

Can you put the GTRS power curve over one of your 2530 ones Mark...?

EnricoPalazzo,

What is your angle...? I don't get what you are trying to insinuate. I'll just move on and disregard it.

GTR STI,

The dyno runs were in 4th gear.

Regarding your observation of linear power dropping off , how do you figure...? %250 increase in power in 30kph section means a very rapid power delivery, so far we realise this is what GTRS's produce. 2530s deliver power more progressively and it's obvious their midrange are far superior.

This is how i read both graphs. kph @ RPM is a guesstimate

@ 95 kph which is 4000 rpm : 100 kw vs ~67 kw

@110 kph which is 4500 rpm : 132 kw vs less than 95 kw

@125 kph which is 5000 rpm : 183 kw vs ~115 kw

@140 kph which is 5500 rpm : 260 kw vs ~180 kw

@155 kph which is 6000 rpm : 360 kw vs ~345 kw

@170 kph which is 6500 rpm : 390 kw vs ~380 kw

@185 kph which is 7000 rpm : 405 kw vs ~400 kw

@200 kph which is 7500 rpm : 400 kw vs ~395 kw

@215 kph which is 8000 rpm : 392 kw vs ???

I must say, I am a little surprised with the top end power figure as well, considering one is a built engine with cams and the other is dead stock. Down low, it's similar to OZGTR's figure.

Hurry up Merli !!!

[Merli]

Hurry up Merli !!!

:Oops:

Oh don't worry about little ol' me!!! I won't be chasing anywhere NEAR 400awkw, so my car won't be comparable to the ones posted at all

I'll be happy to crack 300awkw, but with a nice big fat low rpm curve

If I get sick of the GT-SS, it's good to know that GT2530s can be bolted on for an instant 100awkw increase though!

P.S. I've done 1500kms run in now, the boost will be turned up very very shortly

[Emre]

We have been talking rwkw so far in this thread Andrew.

I am more so looking forward to a low down comparison with the GTSS's.

[markr34gtr]

this is my observation of the whole lag thing people always talk about...

a gtr is a race bread street car... if you want a daily driver race car fit small turbos that run out off puff. its all about what each person really wants....

with my 4.11 gears in 2nd gear at 5000rpm at cruise speed it will fry all 4 wheels and go sideways in 3rd gear also....good stuff...

when you drive your car like its built to be driven what is your rpm range used ????.... 5500 to redline... thats my idea any way.....so whats the point of having full boost at 3500rpm....

ha ha...

my car is a weekend driver for drag racing and thrills....not a car i drive to work and to the shops.....

cheers....

ps. emre thankyou for your fantastic dyno sheets with 2530s.. well done...

[GTR STI]

Final DYNO number......is only a number.....a steep power curve low in the rev range, when acheiveing that number is more important. The final tune, should be done when the car is driven on the road or track.

THE AIM as I see it.....RAPID power delivery, with a very usable rev range....without having to overboost and to have your right foot alway to the metal!!!!

A car with a flat/progressive power curve, but a high final number...does not mean it is quick from A to B....even some diesels, produce high numbers.

Don't like waiting for a progressive delivery of power, to increase the momentium and the speeds.

Who here drives or has driven their car like it's on the dyno.....(in high gear waiting for the rev's to build).....no one, I hope...maybe my grandmother did......That's why the gearbox was invented.

Mark....GT-RS's = rapid power delivery, low in a GTR's usable Rev range...more headroom for power to come.

EMRE...2530's are a great turbine, but for under the figures you've managed to achieve....you've gone beyond the point of reliable efficency...the power curve has died....the turbines have run out of breath. But you get 10 out of 10 for persistence and finding the upper figure for them.....it's like trying to get another 6km/gallon, out of a rubber band powered 3 wheel car, that already gets 1500km per gallon......your done an amazing thing and sorry, if my comments sound rude.

Beyond 350kw, upgrade the 2530's...because you know, you will want more!

[Guest two.06l]

Final DYNO number......is only a number.....a steep power curve low in the rev range, when acheiveing that number is more important. The final tune, should be done when the car is driven on the road or track.

THE AIM as I see it.....RAPID power delivery, with a very usable rev range....without having to overboost and to have your right foot alway to the metal!!!!

A car with a flat/progressive power curve, but a high final number...does not mean it is quick from A to B....even some diesels, produce high numbers.

Don't like waiting for a progressive delivery of power, to increase the momentium and the speeds.

Who here drives or has driven their car like it's on the dyno.....(in high gear waiting for the rev's to build).....no one, I hope...maybe my grandmother did......That's why the gearbox was invented.

Mark....GT-RS's = rapid power delivery, low in a  GTR's usable Rev range...more headroom for power to come.

EMRE...2530's are a great turbine, but for under the figures you've managed to achieve....you've gone beyond the point of reliable efficency...the power curve has died....the turbines have run out of breath. But you get 10 out of 10 for persistence and finding the upper figure for them.....it's like trying to get another 6km/gallon, out of a rubber band powered 3 wheel car, that already gets 1500km per gallon......your done an amazing thing and sorry, if my comments sound rude.

Beyond 350kw, upgrade the 2530's...because you know, you will want more!

we have seen 380+awkw from 2530s. it is not just the turbos that restrict power outputs but the complete package. just remember that a lack of thinking in ALL areas of engine/package modification can restrict the results that can be achieved. Another thing that has to be considered is no two engine characteristics are identical nor are dynomometers and/or their operators. This figure was also achieved using synergy 8000 mobil pump fuel using only 25psi.

[Emre]

Good on you Mark, well done to you too mate.

Do you have more numbers to come from your setup...?

Is there more to be gained from adjusting the mixtures or adding a bit more timing...?

GTR STI,

I've read your post more than once just to make sure I haven't misunderstood it.

I must say I don't agree with much of what you've said so far, which is fair; we don't have to agree on everything.

If you can't see the favourable difference to 2530s from the dyno charts on this thread, I don't know how else I could put it.

Remember both turbos are pushed fairly hard and I haven't noticed 2530 running out their efficiency upto 2 bar.

I could get my car tuned to have the power delivery similar to GTRS's but that would be going backwards IMO.

[DoughBoy]

GT-RS turbos would be good for up to 500+kw at all 4 wheels. I think the main problem with getting that figure would be the rear housings causing a restriction, the .86 would be a better option.

At any rate, as long as the owners are happy, does it really matter?

[Guest two.06l]

GT-RS turbos would be good for up to 500+kw at all 4 wheels. I think the main problem with getting that figure would be the rear housings causing a restriction, the .86 would be a better option.  

At any rate, as long as the owners are happy, does it really matter?

I hope your right doughboy cause we are going from 2530 to gtr-s turbos very soon will get a power/touque comparison using same dyno/operator and will post results for all to compare.

[markr34gtr]

emre. yes there is more there ... next will fit a 3.5 inch exhaust.....cant put any more timing in it.. but with 12.2 or 12.5 afrs on c 16 will make more power.....

last week we ran on a 4wd dyno and made 492 awhp in shoot out at 25 psi boost , c16 , the temps were a bit higher....so we settled on that boost limit to be safe....

keep you posted ...