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Quick question reguarding gcg highflow

calais25t
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calais25t Enthusiast

calais25t

Posted
Posted

Ok Im looking into getting the gcg highflow turbo rated at 450hp for my rb25.

Im just wondering what kind of power people are getting out of these and are they worth the money or should I just go for a gt series turbo?

Also what is the average max power obtainable out of a set of rb25 standed injectors?

I have searched and not really found a positive answer...

Any help would be greatly appreciated,

Thanks. :burnout:

Ok I have large fmic, ems stinger 2 full after market computor, 3' exhaust from turbo, splitfire coil packs, blah blah.

Im chasing at least 300rwhp.

I want to know if this is possible on stock injectors and a gcg high flow?

I rang them and they said there $1950 is that what everyone pays?

Is their a cheaper way?

Any advice much appreciated.

Thanks.

race_snooze Grand Master

race_snooze

Posted
Posted

dont pay $2000 for a high flow when you can get a GT for about $2500, high flow will give you from 220 to 250 rwkw but you will have to some extra stuff like exst, turbo back, fmic, maybe injector up grade, plus some sort of basic ECU up grade. eg piggy back.

Maxx Veteran

Maxx

Posted
Posted

why pay $2500 for a GT when u can pay not $2000 but $1500 for a GCG high flow which will do the same job? :(

plus the high flow will bolt on while the garrett need an adaptor plate?

370cc injector x 6=2220cc

which will support around 222rwkw @ stock fuel pressure

R31Nismoid Grand Master

R31Nismoid

Posted
Posted
  race_snooze said:
dont pay $2000 for a high flow when you can get a GT for about $2500,

thats retail.

tell me one person who pays retail for a turbo these days.

Most workshops dont charge you.

2.1k tops for a GT series

hi-flows are well under 2k also

anyhow, injectors. There is loads of info

200rwkw give or take and your running out. You'll need to do them if changing from stock turbo.

And its not a question of what the turbo will make, its how much power are you chasing?

calais25t Enthusiast

calais25t

Posted
  • Author
Posted
  R31Nismoid said:
thats retail.

tell me one person who pays retail for a turbo these days.

Most workshops dont charge you.

2.1k tops for a GT series

hi-flows are well under 2k also

anyhow, injectors. There is loads of info

200rwkw give or take and your running out. You'll need to do them if changing from stock turbo.

And its not a question of what the turbo will make, its how much power are you chasing?

Ok I have large fmic, ems stinger 2 full after market computor, 3' exhaust from turbo, splitfire coil packs, blah blah.

Im chasing at least 300rwhp.

I want to know if this is possible on stock injectors and a gcg high flow?

I rang them and they said there $1950 is that what everyone pays?

Is their a cheaper way?

Any advice much appreciated.

Thanks.

paulr33 Grand Master

paulr33

Posted
Posted

you can get it rebuilt with roller bearings or plain bears to make it cheaper but you are going from a ball bearing unit to whatever bearing you choose, so its probably a step backward

Bullant47 Community Regular

Bullant47

Posted
Posted
  calais25t said:
Ok I have large fmic, ems stinger 2 full after market computor, 3' exhaust from turbo, splitfire coil packs, blah blah.

Im chasing at least 300rwhp.

I want to know if this is possible on stock injectors and a gcg high flow?

I rang them and they said there $1950 is that what everyone pays?

Is their a cheaper way?

Any advice much appreciated.

Thanks.

I have a receipt for $2100 for my Hiflow which included a new $160 HKS actuator. If you join the Skyline Club you will get 10% discount from GCG.

I know that if you improve your fuel supply the GCG Hiflow will make minimum 320 rwhp.

If you improve your fuel supply and specify and supply a VG30 turbine housing on a GCG Hiflow you will make around 360 rwhp

Cubes Grand Master

Cubes

Posted
Posted

All ball bearing highflows are up around 2k.

Bush bearing are a shade over 1k.

Now that GCG have started to play with the VG30 housing maybe they will bring back in their 500hp variant, previously with their 500hp highflow variant it would surge and carry on a little.

The bigger vg30 exhaust housing will eliminate this hopefully. :thumbsup:

Might even nudge 290-300rwkw IF a big IF they can get the wastegate flowing enough to prevent boost creeping through the roof. :D

hungry6 Experienced

hungry6

Posted
Posted

One thing no ones ever mention is which type of turbo (bearings) last longer under extreme usage. I've had hiflo/rebuild last 6 months and die. When I switched to new b/b one, never had a premature failure, and my driving habits hasn't change.

RB30-POWER Mentor

RB30-POWER

Posted
Posted

300rwhp is about 224rwkw.

You should be able to get awefully close to this figure on stock injectors.

At worst a rising rate regulator may be required to bump the pressure a little.

300rwhp is easily achievable on a GCG high flow.

Hope that helps you.

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