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Gtx3582R (.82 Rear Housing)

fi5h

By fi5h,
in Engines & Forced Induction

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GTR_JOEY Grand Master

GTR_JOEY

Posted
Posted

I'm more after response then outright power, I'm happy with the power atm just want it to come on sooner (of course making power will be a bonus :D) . Hrmm so you think getting a bigger exhaust system will help in response? I would of thought it would of been the opposite? Correct me if I'm wrong please.

Here are my mods:

R33 Block

-N1 Crank

-Forge Pistons

-Forge Rods

-Race Bearings

-Head & MainStuds

-N1 water and oil pumps

Garrett 2860-5

HKS dump pipes and front pipes

Hi flow cat

HKS Hi Power Silent Exhaust (According to their website its is 95mm 3.7")

Tomei camshafts

Mine's adjustable cam gears

Sard intank Fuel pump

SARD Fuel Rail + Fuel Pressure Regulator

SARD 700cc Fuel Injectors

Haltech Platinum PRO

110mm thick intercooler

HKS intercooler hard pipe kit

If there is any kind of restriction then yes having the right size exhaust will help with response,

cam gears can be dialed in for response if thats what ur really chasing

usually an intercooler that thick isnt required and probs isnt helping with response but its there now so leave it :thumbsup:

also i would suggest doing the twin turbo pipe modification as well which will help with response and power by reducing turbulance... PM me if your keen for more info and i can supply it or i can modify the one u have :thumbsup: :thumbsup:

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

Measure the exhaust at it smallest (might be in the muffler). If you need/get a bigger one it definitely won't harm your response - a big single definitely will.

If the exhaust is ok (or replaced) just turn up the boost untill it stops making power or runs out of fuel (don't know what the Sard pumps are good for). Why did your tuner not want to turn up the boost? You will need to spend some $$ for dyno time to get the right cam settings.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Full Boost @ 4900rpm. 20PSI is what my tuner says its safe I don't want to push anymore then that on 98octane. Will I require upgrade fuel setup if I run 20psi on the GTX? currently running an intank SARD fuel pump.

You should have 20psi in by 4000-4200rpm. Not 4900rpm, no way my -5s are that laggy on my 2.6l

Clearly your set-up needs better boost control and/or tuning.

GTR_JOEY Grand Master

GTR_JOEY

Posted
Posted

Mine isn't fully tuned and I'm running a completely different set up mate

Full race twin scroll with a 83/75 BG

Mine made 25psi at 3450 but the waste gates were stuck closed cause they are new..

Though that is with old fuel and cam gears set at 0

Results will be posted soon, hard to compare atm, but our turbo set ups have close to the potential power

Just because u have a hks exhaust doesn't mean that its flowing properly

Also talk to your tuner about setting up the cam gears and let us know

The result

snozzle Mentor

snozzle

Posted
Posted

haha 20psi at 3500rpm ??? dreaming! lol

my gt35 on my stock rb26 hits 20psi at 4400rpm and thats with a 1bar spring, it could possibly come down to 4200 or so with a 20psi spring setup in the wastegate, im also running poncams

Lithium Grand Master

Lithium

Posted
Posted

^ Totally agree, especially with a GTX - I keep meaning to come in to add that 2c. RB25 and RB26 don't spool turbos much different at all, I've actually experienced both an RB25 and RB26 with equivalent cam specs, manifolds and .82a/r GT3582Rs and they both made very similar power and hit 20psi at 4300rpm.

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

The GT3540 (.63 a/r) on my RB30/25 is only tuned to 15psi atm which it hits at 3,500

Will let you know how it does when it is retuned to 21 or so psi ( will have wastegate set at 18-19 and boost controller for the rest).

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