Jump to content
SAU Community

Hks Gt-rs Rb25det Owners: Please Post Your Dyno Graphs And Results

Andi

By Andi,
in Engines & Forced Induction

 Share

Recommended Posts

Andi Experienced

Andi

Posted
Posted (edited)

Hey all,

First off, I've done heaps of research already. :D This isn't a thread asking about what turbo should I get, as I've already decided upon the GT-RS and I've got one coming already. I'm just simply after dyno graphs so I can see an analyse the power, torque and boost curves and to compare each one to the other. I'm just trying to see what others have and what seems to work best so I can get the best out of my turbo when it goes on. :)

Already have looked through the entire RB25 Turbo Upgrade thread, but since most of the pictures there don't work anymore and only peak power figures are written down I'm starting this thread up as I'm more interested in the shape of the power/boost/torque curves.

So all you HKS GTRS owners out there, please post up your dyno graphs and list your modifications as well as boost level your running. :thanks: I'm after RB25 specifically but RB20/RB20DET people please post as well as it will be a useful comparison. :worship:

All help will be greatly appreciated. :)

Thanks,

Andy

Edited by Andi
Beeble Community Regular

Beeble

Posted
Posted

I'll edit this and post them up when i'm home from work (if i can find them)

Was 230rwkw from memory when it was first done about 2 years ago, on about 14psi on a softish tune

Now it's been sharpened up a bit and had splitfire coils added, 16-17psi and just over 250. Feels a lot better in the midrange, though.

Really comes on song at 3500rpm thereabouts.

I'm told that cams will add around 10+rwkw to the equation with a noticeably beefier midrange, but that's a fair whack of cash for not that many extra horsies.

I too would be interested to see what others have done - i know there are GT-RS's out there pushing much bigger numbers than i am!!

Mods (series II r33):

GT-RS / FMIC / PFC / Z32 AFM / Fuel pump / Nismo 740's /Splitfire coils / 3" turbo back

Andi Experienced

Andi

Posted
  • Author
Posted

Thanks Al :)

I wasn't sure if you wanted me to post your one up or not. :thumbsup:

Guys which rear exhaust housings do you have? I seem to have the .64 one (stamped onto mine) but I was under the impression that the Skyline GTRS's came with .86 housings?

nizmo_freek Experienced

nizmo_freek

Posted
Posted

Im pretty sure that the HKS GT-RS for gtst, gts25t and gtt all come with the .63 a/r exhaust housing, i dont think there is optional housings avaliable.

Not sure about the GTR'S tho

700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted

Did I hear that cams for an extra 10kw's top end will cost too much $$$$vs performance...

It is not about the top end...it will spool faster and your turbo will kick in lower and give a better power result..in real world

driving...not dyno type driving...ffs at 7500RPM.lol

Andi Experienced

Andi

Posted
  • Author
Posted

Cams do look tasty but I think I'll be leaving that for a secondary stage of mods, first being the turbo, injectors, afm and pfc. Second might be cams, splitfire coils, plenum. :blink:

Beeble, any luck with getting those graphs yet?

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • joshuaho96
      Tomei gasket

      By joshuaho96 · Posted

      I've heard the Tomei USA head gaskets are decent if you want to o-ring the heads but otherwise not recommended.
    • GTSBoy
      What brakes on R34 GTT(Europe)

      By GTSBoy · Posted

      The 296mm rotors are the R33 turbo brakes. The 310mm rotors are the R34 turbo brakes. The calipers are nearly the same, but not. They're the same caliper but the R34 caliper has longer legs so that it sits out far enough to go over the rotor. The pads are the same for both. When you say, "I bough tsome EBC"....did you just mean pads? Or rotors? 310mm rotors fit under 17" wheels. There may be some wheels without enough clearance though. I can't fit my fingers between the barrel of my wheel and the "corners" of my R34 calipers, but there is plenty of room behind the spokes. This is on Enkei RPF1. You can fit 324mm rotors inside a 17" wheel, but I'd be willing to bet that it would be close to impossible with the Nissan/Sumitomo caliper (using an adapter, of course), because the Sumitomo caliper is fatter than the Brembo caliper that is supposed to go on the 324mm rotors.
    • Kapr
      What brakes on R34 GTT(Europe)

      By Kapr · Posted

      Hi. Can someone tell me what brakes(and mainly WHERE) can i buy brakes on R34 GTT? I bought some EBC which SHOULD go on my car(i have GT but it has GTT brakes) but it does not fit, Brakes are "too" small(296mm) Are 310mm be good or? I have 17 inch wheel so no "big boys" but for me driving i just need one that fits and i can get here in EU/Czech.
    • Marek
      Hi everyone.

      By Marek · Posted

      Since winter isn't that harsh anymore in Poland, i will definetely drive it 365 days a year 😉. But if the snow hits i will try it for sure and let U know. Only swap i am planning to do is of course R34 GTR front 😍.
    • Marek
      WGNC34 - floor mats

      By Marek · Posted

      Hey. Very valuable information about pitwork, I will pay attention when buying any consumable parts 🙏 As for the carpets - I got a handful of information from nengun, from which it appears that indeed the carpets for the driver's side are OEM. They are not able to show me any pictures due to the long chain of different sales entities but after I place the order, as soon as the goods arrive at the nengun warehouse from which they will send the shipment to me they can send me photos and if my purchase differs from OEM I can immediately return it / cancel the purchase. I think I will give it a try 😉. Of course i'll let you know what's what as soon as i get them P.s. I know the topic is not relevant to the thread, but both nengun and amayama have these SICK 😍 trunk room lamps available. Do you know anyone who ordered them? I need to have one in my car
×
×
  • Create New...