GTR ecu in a gts-t

[ScarifieR]

13 devil

just buy a bigger turbo

turbo back zaust

coilies

and a ecu

u will have 320+ hp then and why would u only havin your license for a short time want/need any more power than that for a street car?

your still gonna be limited NO MATTER what u do to about 350hp because u dont have forgies etc so why bother?

when u can afford it build a strong rb25 or just buy a rb26 straight out and put that in

cheaper..

[Kaido_RR]

tj, i never said i was going for that amount of power or that was the reason for doing the swap. (i was just telling Roy wat i read in a mag)

Scarifier, cheers for the reply, im not really looking for a hp figuer as such i would be happy with around 200 to 250rwhp (i cant even make that at the moment ) Im just looking for a different way to get power, high reving etc.

i will admit my research into putting the head on was limited and i didnt think the cost would be as huge as steve mention.

thanks everyone for replys

mike

[Cubes]

Push the stock setup to its edge via an ecu, exhaust, fmic & fuel pump.

Then look at a thicker headgasket/injectors to drop the comp ratio and a bigger turbo to push upwards to 300rwkw.

The RB25 is a good motor.. If you had an RB20 then it would be a total different story.

EDIT: There's nothing wrong with dreaming.

Just under 3years ago I used to dream about an RB30DET.

It eventually came true.

Just don't let it affect your studies from day dreaming.

[geno8r]

Ahhhh man, this thread is golden :spcartman

[PTR33]

Scarifier, cheers for the reply, im not really looking for a hp figuer as such i would be happy with around 200 to 250rwhp (i cant even make that at the moment ) Im just looking for a different way to get power, high reving etc.

mike

You're kidding right? An RB25 will put about 175-180hp to the ground stock. Mine has turbo back HKS exhaust, K&N panel filter, FMIC and 10PSI on the stock turbo and has been Dyno'd at 227.2 RWHP. A SAFC and a little tuning would push this up round 250 easy as it has stock ECU and runs as rich as a Packer over 5000rpm.

All up it's cost me about $2K for the mods and I am currently saving for a PowerFC because I'm not all that happy with the band-aid SAFC approach.

Use your head pal, listen to people who know more than you... or don't, it's your money you will be pissing away.

[Kaido_RR]

PTR33, my car doesnt have a stock turbo, the front is a vg20 which is much smaller than a stock r33 turbo, i have had the car dyno @ 0.6bar and it made 194rwhp, on stock boost it made 187rwhp,

i ama running hks exhuast (cat-back), air filter, r34 gt-t cooler, bov and got ebc

so plz dont say im kidding cuz im not, i have the dyno sheet to prove my 194rwhp

[Gradenko]

I dont follow that? If we were talking NA then i may agree, but i thought it all goes out the window when you introduce forced induction.

Sorry, 'lower boost' is a bit misleading. I should have said 'lower pressure difference'. The flow bench measures by creating a vacum, so I don't really have any idea how it will perform under boost but we do have a good idea. My head porter follows the theory of making it flow as well as you can NA, then throw boost at it. You don't *need* to do anything special when boost is involved, but the extra effeciency makes the difference. It's sound in principle . Do you think the F1 teams didn't do the same thing back in the 80's?

[N I B]

We have done a GTR and GTS back to back on the same turbo (GT30)The RB26 needed 5PSI more boost to make the same power as the GTS , but remove the 6 throttle bodys and the 26 show their tru form.

[Kaido_RR]

Steve, i was under the impression that the 6 throttle bodies flow much better and gave better responds. That was one of my main reason for the rb26head swap, or else i would have just got myself a greddy plenum and fmic.

[Roy]

We have done a GTR and GTS back to back on the same turbo (GT30)The RB26 needed 5PSI more boost to make the same power as the GTS , but remove the 6 throttle bodys and the 26 show their tru form.

Thats interesting.

Were all other aspects equal? Exhaust system, (cat in place), intercoolers, cams?

If the GTST was running a nice big aftermarket Trust / HKS IC and the GTR running the std intercooler, then with a slightly more restrictive exhaust...could this perhaps account for the differences?

Just being sure the comparison is fare ... oh and boost was measure in the same place on both cars:)

[G0DF4Th3R]

so assuming the RB26DET multiple throttle bodies doesnt flow as well as a single throttle body conversion, is 13_Devil better off doing some head work on the 25 head, (port polish cams etc)

[N I B]

We have done major testing and all other factors equal even some in favour of the RB26 the 25 still makes the power easyer. This is why we made our single kits.

This will become another of those threads that turns dark so just come in and we can show you the graphs and even some cars that very much prove this fact.

[Kaido_RR]

cheer steve, i will tk you up on that offer.

maybe thrusday after my exam or firday