Jump to content
SAU Community

Recommended Posts

hey kiddies

Anyone slapped a GT-RS in there rb25det ??? I'm mainly just looking for some dyno graphs please and peoples comments who *actualy* have/had the turbo in there car.

Im trying to decide weather to get a gt-rs or a 2535, I know the gtrs is bigger but i wouldnt mind that if its not that much laggier.

Im sure theres 10000 ppl who have got one, and i did try seaching :no: could only find 1 referance which was in the sticky rb25det turbo upgrade thread :D

thanks :laugh:

Link to comment
https://www.sau.com.au/forums/topic/109249-hks-gt-rs-rb25det/
Share on other sites

  • Replies 87
  • Created
  • Last Reply

Top Posters In This Topic

Back when i was looking at power graphs etc... they seemed to range from 230-260rwkw for the most part, with the occasional freak 290 or so. one guy has over 300!

You'll be right on the cusp of needing injectors (i did mine) or a fuel reg and a Z32afm (i also did this).

Much of a muchness between the GTRS and the GCG Hiflow.

very happy with my choice.

good luck!

cool thanks again :D Sounds like it wont be to laggy at all :D

I know everyone uses a diff dyno and 10000 factors can change your reading but i thought people were making like 240ish kw @ 14psi with the 2535's ? I thought the GTRS would make slightly more power at the same psi??

^ i pulled 251 on a different dyno (friend of a friend works on commo's a lot in his shop and has one).

And as i said, people are making a reliable 260rwkw on that turbo, different cars, different dyno, different day.

I don't have aftermarket cams, maybe some of those do?

For what it's worth, a friend's ~260rwkw 200SX runs neck and neck with my lowly 230kw. He gets a fatter number on his dyno sheet. I still manage to sleep soundly at night. :D

Now please dont take this the wrong way. I find it hard to beleive a turbo that looks identical to the stock s14 sr20 t28 with simply a 71 compressor wheel could put out in the 250-260rwkw range....its not the 71 compressor I find unbeleivable, but the small 0.64 exhaust housing with 53mm turbine...

I have one in front of me now, and dam it looks so small (the 0.64 housing).

This thread is about dyno sheets and the HKSGTRS, how about some times sheets to go with it..??

BTW, out goes the door for my GT30r and in for the gtrs :P

I'd hazard a guess the two dyno sheets in this thread so far are a lot more closer than the 40rwkw difference it looks at face value.

The 230 sheet was NOT in shootut mode and done in January which is summer so if it was a hot day it would of read higher in shootout mode.

The 270 was in shootout mode but with an inlet temp of 53 so had it not been in shootout it would of read lower.

see now uve complicated the issue :) hehe thanks though.

would i be correct in saying that the gt-rs will give you the highest figure with the right mods ?

like i've seen a few gtrs graphs that are 270-300kw or so... can you get that sorta figure with a 2535 ?

Just as a direct comparison, on the same Racepace dyno:

2535 at 14psi....

see now uve complicated the issue :) hehe thanks though.

would i be correct in saying that the gt-rs will give you the highest figure with the right mods ?

like i've seen a few gtrs graphs that are 270-300kw or so... can you get that sorta figure with a 2535 ?

ive never seen a 2535 with that sort of power but u wont want any more than what i have now... they are a great turbo, and you can pick them up cheap! im more than happy to show you how they go!

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

    • Who did you have do the installation? I actually know someone who is VERY familiar with the AVS gear. The main point of contact though would be your installer.   Where are you based in NZ?
    • Look, realistically, those are some fairly chunky connectors and wires so it is a reasonably fair bet that that loom was involved in the redirection of the fuel pump and/or ECU/ignition power for the immobiliser. It's also fair to be that the new immobiliser is essentially the same thing as the old one, and so it probably needs the same stuff done to make it do what it has to do. Given that you are talking about a car that no-one else here is familiar with (I mean your exact car) and an alarm that I've never heard of before and so probably not many others are familiar with, and that some wire monkey has been messing with it out of our sight, it seems reasonable that the wire monkey should be fixing this.
    • Wheel alignment immediately. Not "when I get around to it". And further to what Duncan said - you cannot just put camber arms on and shorten them. You will introduce bump steer far in excess of what the car had with stock arms. You need adjustable tension arms and they need to be shortened also. The simplest approach is to shorten them the same % as the stock ones. This will not be correct or optimal, but it will be better than any other guess. The correct way to set the lengths of both arms is to use a properly built/set up bump steer gauge and trial and error the adjustments until you hit the camber you need and want and have minimum bump steer in the range of motion that the wheel is expected to travel. And what Duncan said about toe is also very true. And you cannot change the camber arm without also affecting toe. So when you have adjustable arms on the back of a Skyline, the car either needs to go to a talented wheel aligner (not your local tyre shop dropout), or you need to be able to do this stuff yourself at home. Guess which approach I have taken? I have built my own gear for camber, toe and bump steer measurement and I do all this on the flattest bit of concrete I have, with some shims under the tyres on one side to level the car.
    • Thought I would get some advice from others on this situation.    Relevant info: R33 GTS25t Link G4x ECU Walbro 255LPH w/ OEM FP Relay (No relay mod) Scenario: I accidentally messed up my old AVS S5 (rev.1) at the start of the year and the cars been immobilised. Also the siren BBU has completely failed; so I decided to upgrade it.  I got a newer AVS S5 (rev.2?) installed on Friday. The guy removed the old one and its immobilisers. Tried to start it; the car cranks but doesnt start.  The new one was installed and all the alarm functions seem to be working as they should; still wouldn't start Went to bed; got up on Friday morning and decided to have a look into the no start problem. Found the car completely dead.  Charged the battery; plugged it back in and found the brake lights were stuck on.  Unplugging the brake pedal switch the lights turn off. Plug it back in and theyre stuck on again. I tested the switch (continuity test and resistance); all looks good (0-1kohm).  On talking to AVS; found its because of the rubber stopper on the brake pedal; sure enough the middle of it is missing so have ordered a new one. One of those wear items; which was confusing what was going on However when I try unplugging the STOP Light fuses (under the dash and under the hood) the brake light still stays on. Should those fuses not cut the brake light circuit?  I then checked the ECU; FP Speed Error.  Testing the pump again; I can hear the relay clicking every time I switch it to ON. I unplugged the pump and put the multimeter across the plug. No continuity; im seeing 0.6V (ECU signal?) and when it switches the relay I think its like 20mA or 200mA). Not seeing 12.4V / 7-9A. As far as I know; the Fuel Pump was wired through one of the immobiliser relays on the old alarm.  He pulled some thick gauged harness out with the old alarm wiring; which looks to me like it was to bridge connections into the immobilisers? Before it got immobilised it was running just fine.  Im at a loss to why the FP is getting no voltage; I thought maybe the FP was faulty (even though I havent even done 50km on the new pump) but no voltage at the harness plug.  Questions: Could it be he didnt reconnect the fuel pump when testing it after the old alarm removal (before installing the new alarm)?  Is this a case of bridging to the brake lights instead of the fuel pump circuit? It's a bit beyond me as I dont do a lot with electrical; so have tried my best to diagnose what I think seems to make sense.  Seeking advice if theres for sure an issue with the alarm install to get him back here; or if I do infact, need an auto electrician to diagnose it. 
    • Then, shorten them by 1cm, drop the car back down and have a visual look (or even better, use a spirit level across the wheel to see if you have less camber than before. You still want something like 1.5 for road use. Alternatively, if you have adjustable rear ride height (I assume you do if you have extreme camber wear), raise the suspension back to standard height until you can get it all aligned properly. Finally, keep in mind that wear on the inside of the tyre can be for incorrect toe, not just camber
×
×
  • Create New...