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G'day Mik, so what sort of engine did or do you have these GTRS bolted to? Im looking at just a stock motor with tomei cams bigger injectors...PFC etc...

and what revs are you getting 1 bar boost at?

Stock motor with Tomei drop in cams. On the dyno, 1 bar comes up at about 4650, but target boost comes up VERY fast from there.

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ahh ok pete! I didnt know you had R34 N1's I thought they were the garrett equivilent of the HKS 2530?

anyhow Im still searching for a set of N1s or 2530s..... hmmm

I thought these were one in the same BUT i will know for sure when they come off and i will let you know as i am rapped with there around performance and believe these to be one of the best turbos for a street gtr.

I thought these were one in the same BUT i will know for sure when they come off and i will let you know as i am rapped with there around performance and believe these to be one of the best turbos for a street gtr.

Peter, do your turbos run A/R 0.60 comp housings? I'm pretty sure that the turbos that everyone calls "R34 N1" turbos only run .42 housings

Peter, do your turbos run A/R 0.60 comp housings? I'm pretty sure that the turbos that everyone calls "R34 N1" turbos only run .42 housings

I know i have seen a thread on here with links to a site with all the nismo turbo specs on it but i just did a search and was unable to find it.

It showed the spec to the r32n1/r33n1 and the r34n1(ball bearing) and also had a couple nismo specials in there and the R34N1 was the largest a/r ratio turbo with a 0.60compressor and a 0.64 turbine (same as the 2530). Plus a young kid in buno took a shopping list from my car and bought all the same gear (r34n1) and these are 0.60/0.64 same as mine. I will keep trying to find the thread

:)

I'm currently getting my car tuned and I roughly want about the 300rwkw. It has the following:

Nismo R32 turbos - rated at 300ps each

RX7 Series IV Injectors - 550cc

RB20DET A/f meters

Standard fuel pump - (is going to restrict a lot of the power)

HKS Cam Gears

Will let you know how it goes.

Yet everyone raves about 2530s which have similar lag

In my experience, no, they don't. A few facts, we get 1 bar out of the 2530's at under 4,000 rpm on the RB26. The GTRS moving parts (compressor, shaft and turbine) weigh 25% more than the 2530 moving parts. So there is simply no way that they can be as responsive, given all else being equal.

This experience is not unique, the 2 fastest GTR's at Tsukuba again this year where both running 2530's. If the GTRS's where as responsive and made more power, I am sure the unlimited budgets would have funded them.

:D

I'm currently getting my car tuned and I roughly want about the 300rwkw. It has the following:

Nismo R32 turbos - rated at 300ps each

RX7 Series IV Injectors - 550cc

RB20DET A/f meters  

Standard fuel pump - (is going to restrict a lot of the power)

HKS Cam Gears

Will let you know how it goes.

I've got similar to you and will be looking for about the same power :P

I've got 2530's

Sard 700cc injectors

HKS intank pump

HKS cam gears

PFC + HC

Looking to get a set of RB20/25 AFM's and HKS style split dumps then I can start to assemble it all :D

Blitz...I don't think you can get the 2530KAI in T25 flange for RB26, can you?

There was a rumour that the kai kits were going to becoming available for the GTR, though admittedly I have only seen the KAI version of the 2530 available as a single item so far.

Might have a browse through the goodsmaster later.

I've got similar to you and will be looking for about the same power :P

I've got 2530's

Sard 700cc injectors

HKS intank pump

HKS cam gears

PFC + HC

Looking to get a set of RB20/25 AFM's and HKS style split dumps then I can start to assemble it all :D

I finally got my car tuned yesterday and got some fantastic results. The power I got is 297rwkw with standard fuel pump and a/f meters. I could not believe my eyes nor could my tuner. I did however put 550cc injectors on.

The power curve is just senstational; and the car pulls like a freight train. It is very progressive and goes all the way to 8000rpm.

I'm so pleased with the results that I will get used to the power first and then add a bigger fuel pump and a/f meters later.

I will post up pictures of the power curve very shortly.

I will post up pictures of the power curve very shortly.

Here is the dyno graph for Antz car. I took a pic of them yesterday. The dyno reads 10% and reads 360rwhp = 396rwhp taking into consideration10% loss. This works out to just under 300rwkW and Im sure if we were to run the car on a calibrated dyno that it would read 300rwkW.

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